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Doctor insights on: Can Antibiotics Make Your Period Come Early

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Dr. Chevies Newman
1,113 Doctors shared insights

Premature (Definition)

Very premature is a condition in which a baby is delivered between 28 and 31 weeks' gestation. Depending on how premature, how sick, and how lucky or unlucky a baby is, he can get brain problems, cerebral palsy, blindness, deafness, developmental problems, learning disabilities, severe lung diseases, infection and loss of some intestines, etc... Babies who are only moderately premature usually ...Read more


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After my first time sex, I went to planned parenthood, they said, I had a little bit of yellow fluid. They gave antibiotic afterwards. Two days later, I got my period early which is unusual. Do I have std?

After my first time sex, I went to planned parenthood, they said, I had a little bit of yellow fluid. They gave antibiotic afterwards. Two days later, I got my period early which is unusual. Do I have std?

The only way to: See if you have an STD is to get tested. A urine sample, or swab of the yellow fluid will make the diagnosis. I recommend a full STD check which includes urine for gonorrhea, chlamydia, and trichomoniasis. An exam to evaluate for warts, lice, herpes, etc and blood tests for syphilis, Hiv, and hepatitis C. This is a very complete list of STD's not to scare you but a good reminder to use condoms ...Read more

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Had my period super early this month. Also I'm on an antibiotic called cefdinir for strep throat. Could that have made it early?

Had my period super early this month. Also I'm on an antibiotic called cefdinir for strep throat. Could that have made it early?

Period timing.: Normally antibiotics don't cause your period to be early. But if your body is stressed enough by an illness it could impact when you have your period. ...Read more

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Could the antibiotic Macrobid delay your period?

Could the antibiotic Macrobid delay your period?

It shouldn't: Antibiotics should not interact with your period one way or the other. One concern with mixing antibiotics and birth control pills is that the antibiotics can change one's gut flora (bacteria) enough to effect the way the pill is absorbed and that can affect the period. The short answer is still, no. If your period remains delayed it would be worth a visit to the doctor ...Read more

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Does azithromycin or a similar antibiotic delay your period?

Does azithromycin or a similar antibiotic delay your period?

Periods: Antibiotics should have no effect on your cycles. Even if you are on birth control it will not effect your cycles. ...Read more

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A fishy smell a day before I get my period. Is that normal! I have never gotten that smell before tho, I was recently on an antibiotic for 2 weeks.

A fishy smell a day before I get my period. Is that normal! I have never gotten that smell before tho, I was recently on an antibiotic for 2 weeks.

BV: I believe you have developed Bacterial Vaginosis because you have been on Antibiotics for so long and therefore the normal Flora of your Vagina has been disturbed, you need to see a provider for treatment. ...Read more

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When a prescription says take two/three/four times a day does that mean between morning and evening or over a 24 hour period? Like for an antibiotic.

Dosing per day: Well in a perfect world we could take the medication on an exact basis -for example 3 times a day would be every 8 hrs in a 24 hr period. This is because medications have a "half-life" in the body which means over time the body will get rid of it, so u have to take it again. Problem is, the daily routine can get in the way-- consider sleeping for example and how much time that eats up. Try ur best ...Read more

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Hadmy period for 1day really darkbrown a week after sex (took map) just like I should have could I be pregnant? Or could it be the antibiotic thatitook

Hadmy period for 1day really darkbrown a week after sex (took map) just like I should have could I be pregnant? Or could it be the antibiotic thatitook

Yes: While periods do vary from cycle to cycle, any that are different should get a preg test. Some antibiotics can interfere with contraceptives, so adding another method--like condoms would be wise. ...Read more

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I am on bc. If I finished an antibiotic 7 days ago for a UTI & had intercourse the day my period ended how likely is it to get pregnant off pre come?

I am on bc. If I finished an antibiotic 7 days ago for a UTI & had intercourse the day my period ended how likely is it to get pregnant off pre come?

Pregnancy: If you are on bcps you should be quite safe, although nothing short of abstinence is 100%. What you describe is virtually risk free. ...Read more

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I took an antibiotic and I am not on the pill but can it mess up your period?

An antibiotic would: Not be anticipated to change your period. But if you are being treated for a serious medical condition - that could impact your period. ...Read more

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My period started but only lasted 2 days. I have been sick and had just started taking decongestant and antibiotic. Is that why my period stopped?

My period started but only lasted 2 days. I have been sick and had just started taking decongestant and antibiotic. Is that why my period stopped?

Secondary amenorrhea: Hi interest, whenever you have an irregular period, you need to do a pregnancy test. If your period only lasted 2 days, that is an irregular period. You are 40 so you are probably thinking that pregnancy is not likely. As drs we need to rule that out before further work-up. The other reasons are beginnings of menopause or stress. Hope this helps. ...Read more

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Hi, I was on germentin for 7days and my period is now 10 days late, could this because of the antibiotic? I started tablets on day period was due. Thnk

Hi, I was on germentin for 7days and my period is now 10 days late, could this because of the antibiotic? I started tablets on day period was due. Thnk

Late period: Irregular periods are very common. If you normally have regular periods and then suddenly have one that is early or late this usually gets better on its own with cycles returning to normal over the next few months. If you are not wanting to be pregnant you should discuss birth control which will also help with cycle control. ...Read more

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I am currently taking an antibiotic for Lyme disease can this cause me to miss my period?

I am currently taking an antibiotic for Lyme disease can this cause me to miss my period?

Hard to know: There are many reports of women having irregular periods when on antibiotics but it is not proven whether there is a relationship; if you are on antibiotics you have an infection & it is hard to know if the delayed period is due to the antibiotics or the infection! But in either case, your experience is not unusual.
I hope you are getting adequate treatment for lyme- see comment:. ...Read more

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Hello, my period is 3 days late. I was sick about a month ago, and I was put on the antibiotic amoxicillin for two weeks. Could that be the reason my?

Hello, my period is 3 days late. I was sick about a month ago, and I was put on the antibiotic amoxicillin for two weeks. Could that be the reason my?

Possible: An acute transient illness has the capacity to delay your menstrual period. I doubt the antibiotic Amoxicillin had anything to do with this. It sounds as if you are concerned that you may be pregnant, and if so, there are otc tests available but this is a little early to be sure. ...Read more

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Started an antibiotic 4 days ago for an absessed tooth and today I started spotting. Period not due for two more weeks. Should I be concerned?

Started an antibiotic 4 days ago for an absessed tooth and today I started spotting. Period not due for two more weeks. Should I be concerned?

Probably unrelated: Although the infection (abscess) for which you were given the antibiotic can cause damage to other organ systems in your body. Antibiotic is to control severity of the infection, but will not cure it. Treating the abscess will require root canal or extraction. So call your Dentist, and also call your OBGyn. ...Read more

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Had flu and UTI. Taking antibiotic and lots of water. Can this decrease my hemoglobin from 11.2 to 10.3 I had heavy period between the two tests?

Heavy period: Most likely your heavy period is the explanation of your anemia-rather than your antibiotics. Yes, sometimes, people can have drug reaction that causes destruction of the red blood cell etc. However, iron deficiency anemia as the result of your heavy period is most likely the reason of your anemia. I encourage you to go to see your primary doctor and get some evaluation on the anemia. ...Read more

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I'm taking steronate to delay my period. Got a bad flu & started antibiotic yesterday, does antibiotic contradicts with steronate? What should I do?

I'm taking steronate to delay my period. Got a bad flu & started antibiotic yesterday, does antibiotic contradicts with steronate? What should I do?

Pharmacist: I would suggest calling the pharmacist where you filled the prescriptions, so they can take in to account all your medications and conditions regarding potential interactions. Hope this helps! ...Read more

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Recently had UTI under went tretalent of antibiotic. Period was supposed to happen on 19 but had on 6, had unprotected sex on 17th pregnancy chance?

Unanswerable: There is not any way to give you a valid answer. There are too many variables. In this situation, always, one must use extra protection with sexual activity. It is too soon, by your dates to test yet. So the best you can do is wait. ...Read more

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If quit an antibiotic on mon. & on thurs. Had a period &started taking cryselle again on sunday like normal. Is it likely to get pregnant off pre cum?

If quit an antibiotic on mon. & on thurs. Had a period &started taking cryselle again on sunday like normal. Is it likely to get pregnant off pre cum?

Depends: Assuming that you were taking the pill for at least a couple of months before, and assuming that you are taking it correctly, then the chance of pregnancy is incredibly small. Most antibiotics do not affect the effectiveness of birth control pills. ...Read more

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Is candida real? I had been on 3 different courses of antibiotic in a short period of 1 month, 3 months later still feel very fatigued and lost weight

Is candida real? I had been on 3 different courses of antibiotic in a short period of 1 month, 3 months later still feel very fatigued and lost weight

Fungal infection: Yes candida is a real infection. Candida is fungal infection. the treatment is anti-fungal therapy - not an antibiotic. taking antibiotic will not do anything to candida infection. I do not know why you are fatigue and have weight loss- obviously it is something you should discuss with your doctor. ...Read more

Dr. John Leander Po
1,117 Doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more


Dr. Scott Keith
1 Doctor shared a insight

Menstrual Period (Definition)

Menstrual period is a medical term for the monthly bleeding ...Read more