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Dr. Mary Margaret ONeill

Gynecology
Campbell, CA
37 years experience female

About

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Gynecology

Doctor Q&A

98 Answers
67 Agrees
The number of answers this doctor has agreed with.
A female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: Bleeding on Depo Provera (medroxyprogesterone) can be very unpredictable. Eventually, if you are lucky, all bleeding will stop. But in the first 6 mo... Read More
A member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Pregnancy test: Women miss menstrual periods or get them late for lots of reasons. A simple home pregnancy test is easy and reliable. The urine pregnancy test may n... Read More
A 20-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
No: We currently do not recommend any type of douching. The vagina is designed to clean itself and maintain the healthy bacteria. If you have an infect... Read More
A member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes : A normal menstrual period can be from one to seven days of blood flow. Usually, not always, the number of days of flow is consistent each month for ... Read More
A 28-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Many: The most common causes of vaginal itching are infections, like yeast or bacterial. Some sexually transmitted infections can cause itching. And skin al... Read More
A 22-year-old member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Withdrawl: Some semen, including sperm, is released prior to 'pulling out'. Withdrawl is not a very effective method of birth control, and if you are concerned ... Read More
A member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Maybe: Pregnancy is not impossible after Plan B or other emergency contraception, irregular bleeding and an abnormal menstrual cycle are also possible after ... Read More
A 46-year-old member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Puberty: Normal puberty starts anywhere from 9 to 16 years. The start is influenced by a number of factors including weight, environmental, genetic, and struc... Read More
A 39-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Maybe: Those are all common symptoms of early pregnancy. Some women have pregnancy symptoms during the normal pre- menstrual time because the Progesterone i... Read More
A 26-year-old male asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Unlikely: Some women do have regular cyclic bleeding at the beginning of a normal pregnancy, but usually a normal period means she isn't pregnant. A simple uri... Read More
A member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Not necessarily: A normal menstrual cycle can be anywhere from 21 to 35 days. Most women have their cycles fairly regularly and predictably, but a 3 day variation is ... Read More
A 19-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Not necessarily: Lots of possibilities if you bleed later than expected. You could have a normal pregnancy and the bleeding is coming from areas not related to the pre... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Possibly: Plan b may may alter your menstrual cycle, usually only for one cycle. I would expect your next menstrual cycle to be back to your normal. Home pregn... Read More
A 24-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Talk to your midwife: There is no reason to worry, a quick visit for a fetal heart rate check will let you know if the baby is ok. We prefer that you come n for an evalua... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Maybe: Some antibiotics can interfere with the activity of the birth control pill. So, the cycle flow may change. Hopefully you were instructed to use some ... Read More
A female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Get tested: Condoms are good for preventing sexually transmitted diseases, and good work for using one. But all contraceptive methods can fail, especially in youn... Read More
A 25-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Exam/sonogram: This may not be worrisome, or you could have a polyp, infection, small vaginal teat or the blood can be from a male partner. Some women have mid cycl... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
easy test: Bleeding patters are not very reliable indicators of pregnancy. You may or may not have regular cycles with ovulation and you may or may not bleed dur... Read More
A 37-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Just monitor: Hpv positive should not change the course of pregnancy or delivery. Genital warts may increase during pregnancy, and can be treated. Abnormal pap sm... Read More
A 28-year-old male asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Menoapuse?: Do you mean menoapuse? Change of life is frequently used as a desriptor of menopause. Menopause is defined as the cessation of normal menses and star... Read More
A 23-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Optimal weight: A very common reason women stop having menstrual cycles is because of body weight, either too high or too low. Maintaining a normal body mass index (b... Read More
A 35-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Not always: Treatment of ovarian cysts, even complex cysts varies based on your age, the cyst size, your symptoms and sometimes tumor markers. If these cysts are ... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Pregnant: It is safer to assume that you are pregnant. You may be barely pregnant, and it may be to soon to tell if it is a normal pregnancy, but very few non-p... Read More
A 24-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: Typically you ovulate (can get pregnant) two week before the expected period. So, breastfeeding women can get pregnant before the periods start. Women... Read More
A 21-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
PAP: Do you mean pap smear? Current guideline suggest starting cervical pap testing in all women at 21 y/o.
A 42-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
No: Most women feel better on estrogen because it helps their symptoms, they sleep better with less hot flashes or night sweats. Some Progesterone pills ... Read More
A 26-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Maybe: The negative pregnancy test suggests that you are not pregnant, though it wouldn't hurt to repeat it. You could also have an ovarian cyst that is hor... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Need to be seen: Assuming she is not pregnant (and a home pregnancy test is inexpensive and accurate), a physical exam and possibly an ultrasound should help with the ... Read More
A 28-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Sonogram: Any bleeding in the first trimester warrants an exam, sonogram to evaluate the pregnancy. Bleeding can happen in a normal pregnancy, a miscarriage an... Read More
A 20-year-old male asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Depends: Theoretically, a woman can be fertile during her menstrual flow or just after it stops. If it is a 21 day cycle and 7 days of menstrual flow, ovulat... Read More
A 42-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: If you are soaking one pad each hour, you should be seen by someone. The er physician may just call a gynecologist, or someone ho is comfortable with ... Read More
A 21-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Be happy: Not everyone has pms symptoms. The symptoms vary over time, so you may develop some as you get older. If you have a regular monthly cycle you probably... Read More
A 28-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Hard to do: Manipulating the cycle, late in the cycle, is difficult- or impossible. Best to plan a few months in advance and use hormonal contraception to alter ... Read More
A 34-year-old member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: Theoretically, a woman can be fertile during her menstrual flow or just after it stops. If it is a 21 day cycle and 7 days of menstrual flow, ovulatio... Read More
A 26-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Way before: Don't skip the condom. Condoms help prevent hpv and lots of other unpleasant diseases, as well as pregnancy. But it is a good idea to use two forms o... Read More
A 22-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: Pregnancy is always a possibility. Home pregnancy tests are easy, accurate and not too expensive. Crisis pregnancy centers use the same tests, - easy... Read More
A 43-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
HPV: Hpv testing, while done with the same specimen as the pap, is reported separately. The report should include a pap test result with a narrative descr... Read More
A female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Possibly: Pregnancy is always a possibility but you may also have irregular cycles. One year of unprotected intercourse without pregnancy is the definition of i... Read More
A 20-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Unlikely: Modern pregnancy tests, both blood and urine tests, are vary accurate.
A 20-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: If you have a 21 day menstrual cycle and 7 days of flow, then you will ovulate near the end of that flow. Typically, you ovulate 12-16 days before t... Read More
A 18-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Pregnancy test: The first step is a pregnancy test, and then a sonogram of the pelvis. Pregnancy is the first diagnosis to consider, but you could also have an ovari... Read More
A 42-year-old member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Chlamydia: Chlamydia infections that are not diagnosed early, but spread to the uterus and fallopian tubes can cause pid (pelvic inflammatory disease). Pid may d... Read More
A member asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Exam, labs, sonogram: You should see a gynecologist or a family physician for an evaluation of the source of your pain. You may need blood or urine tests, possibly an ultra... Read More
A 27-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
No: Corn starch is better than talc. You might want to make sure you don't have an infection, like yeast/monilia. And try to see if your soap, or perfu... Read More
A 19-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Maybe: The uterus changes throughout pregnancy. A fibroid may appear as a 'thick' uterine wall, though they are usually distinct on ultrasound. A contractio... Read More
A 22-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Yes: The symptoms you describe are not necessarily typical for pregnancy, but your period is late. Pregnancy tests are simple and inexpensive, some crisis... Read More
A 25-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Many many answers: Polyps, fibroids, hormonal imbalance, pregnancy, vaginal or cervical diseases are just some of the possible reasons for prolonged bleeding. A normal ... Read More
A 21-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Probably: Once you have started birth control pills, just take one pill every day, regardless of when you bleed. So, yes, start your new pack of pills at the us... Read More
A 21-year-old female asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
14 d before: Ovulation usually occurs 12-16 days before your next cycle, if you have a regular monthly cycle and you ovulate regularly the calendar is not the mos... Read More
A 18-year-old male asked:
Dr. Mary Margaret ONeill
Gynecology 37 years experience
Lots of causes: The bleeding in the middle of your cycle, probably was not a normal menstrual period. Some women bleed at the time of ovulation. If you bleed after s... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

2
Recommendations
197
Thank you notes
HealthTap member
Mar 30, 2015
Dr. ONeill is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. ONeill is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thanks for your quick reply! Thanks for your response. I do take it QD at the same time alway. Was on Yaz for about 9 years & switched to LoLo a year ago. No other meds
HealthTap member
Thank you, your answer was very helpful! Thanks so much! Your advice made me act quickly and I have an ultrasound booked for tomorrow.
HealthTap member
Thank you, your answer was very helpful! My thoughts exactly. Thanks for taking the time to help out.

Education & Training

Medical/Graduate school

Creighton University School of Medicine, NE
Graduated 1985MD

Residency

METROPOLITAN HOSPITAL

Awards

Top Gynecologist, First Place, California - Winter
2013
Top Gynecologist, First Place, California - Summer
2013
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less