Doctor insights on:
Menstrual refers to the monthly cycle in women which prepares the female for ovulation, generally once per month, which is that time of month that the egg can be fertilized by the male sperm, for the purpose of reproduction. Menstrual cycles start at the first day of menstruation. (it's always been curious to me that 'menstrual' and ...Read more
Varies: Depends how accurate your due date estimates are. If you have a super-reliable dating then the reverse calculation is "pretty good," like within 3-4 days. If your EDD is +/- 2 weeks as it often is, then the reverse calculation will be not useful. Good wishes. ...Read more
1st trimester sonos: Pregnancy sonograms performed by a skilled certified sonographer between 6 and 14 weeks are very reliable "dating scans" and can help determine the gestational age with fairly good accuracy and estimate the expected date of delivery. Sonograms performed later in the 2nd or 3rd trimester are still useful but are not as accurate. ...Read more
For Ob- yes: The "wheel" as it is known, is very helpful for your doctor. For most patients, it is a source of confusion. ...Read more
Yes: Your OB can figure it out with a preg wheel and confirm it with an ultrasound. ...Read more
See you MD: There are many different reasons for a change in menstrual cycle including ovulation. Your md will ask about your history. Age , medical conditions like thyroid disease and diabetes, life stress, strenuous exercise, and eating disorders are a few things which can affect the menses. A blood pregnancy test may be considered. ...Read more
No: Periods so close together indicate a hormone imbalance. If she is weak as well she may be iron deficient and may need vitamin d. With healthy food, 7 1/2 to 8 hours sleep, a good prenatal vitamin with methyl folate and methyl cobalamine, movement through the day and good stress management, her cycle may lengthen and ovulation occur regularly. ...Read more
40 weeks from LMP: The convention is calculating 40 complete weeks from the last normal mentrual period. For assisted conception by any method there are small modifications, but they don't change the basic rule. With uncertain/unknown lmp, dating is estimated by ultrasound measurement of fetal parts and pregnancy structures, but if this agrees within 1 week to lmp, then menstrual dating is still used. ...Read moreSee 1 more doctor answer
U can: Ask your OB he or she can figure it out based on how often your periods are and when u are due. ...Read more
Yes: One change in dates alters the whole cycle for that month and subsequent months. ...Read more
Your OB can: Show you on an OB wheel you are due 38 weeks from your conception date if you were having 28 day cycles. ...Read more
Naegele's Rule: The naegele's rule estimates the expected date of delivery (edd) by adding one year, subtracting three months, and adding seven days to the first day of a woman's last menstrual period (lmp). Just apply in reverse: last menstrual period was about 2/20/13: conception two weeks later. ...Read more
Timing: The best time to try is around the time of ovulation, or best shortly before. For most this is around mid-cycle, women with irregular cycles are harder to pinpoint. Counting cycle days, following temperatures, home opk are often helpful. Do you think you have a clear idea around when you ovulate? Is that based on opk, counting days, or another method? ...Read more
I use the ovulating calendar and calculator and my menstrual Calendar and they all say 11/5-11/10 and my ovulating date is 11/8 is it correct?
An approximation: That date is only an approximation. Actual ovulation could happen any time during your fertile window. If you want to be more precise, you should buy an ovulation predictor kit at the drug-store. You can check each morning of your fertile window to see if you are likely to ovulate in the next 12-24 hours. Ideally, if you want conception, you should have intercourse BEFORE you ovulate. ...Read more
Pregnancy wheel: I'm not sure what exactly you're asking for here, but i'm assuming you need a guide to calculating pregnancy dates. Usually you can figure it by the date of either conception or the date of the last menstrual period, then using a pregnancy wheel (i'm sure there are online versions) that will calculate what the due date should be. ...Read more
You don't: Calculators make assumptions that everybody ovulates and that everybody has periods every month. However, this may not necessarily be the case. Calculator will just give you an ovulation date 2 weeks prior to your menses. To be certain that you actually ovulate, you should purchase an opk and use it as directed, generally start testing ~ day 10 if you have regular periods. ...Read more
Due Date: See if this is what you are looking for: http://americanpregnancy.Org/duringpregnancy/pregcalc.Html. ...Read more
Sort of: If your due date is based off of an ultrasound, you could then see when you most likely had your menses and when you conceived. Is that what you mean? If you are sure of your menstrual period, it should correlate closely with your due date from an ultrasound. I hope that helps. :). ...Read more
Not accurate: Online calculators make lots of assumption. First they assume that you ovulate, which is not the case for all women. Then they either assume that your periods are exactly 28 days apart or that you ovulate exactly 14 days before your next period. A better way is to use over the counter ovulation prediction kits which will help you know when exactly you are ovulating and time intercourse ...Read more
Nutrition Calculator: Here is a great website to calculate and get nutritional facts. http://nutritiondata.self.com/ weight watchers online is also another website great for this. ...Read more
Difference in GFR: The answer to you question is that the GFR calculators give an estimated, not an actual, gfr. The calculation used to estimate the GFR is based on a person's age, sex, race, height and weight. The difference in your estimated GFR levels is about 5%, perhaps your weight was different. The only way to know what your real GFR is is to have a doctor order a 24 hour urine for creatinine clearance. ...Read moreSee 2 more doctor answers
I looked my ovulation-calculator apps. It said today is my ovulation day. Otherwise i took an ovulation test, negative. Help?
Help?: How can we help you? Your testing is not working. ...Read more
I have two ovulation-calculator apps, it said. Different answers. One it said last week on 4/15 and the other one it said today 4/20. Confusing, help?
Dates: On a normal cycle your ovulation is 14 days before your next period. But since you can't foretell the future, this is of little help. You might have 11-17 days from the beginning of your period until ovulation. After ovulation it is always 14 days to your period. The apps have to assume a 25 day cycle or a 28 day or a 31 day cycle - thus the difference. ...Read more
LP was dec30-jan13. Dd nov6. Conception calculator says feb7-13 was sex leading to conception. Not possible. Just curious if u/s can be off a few days?
Yes it can: When (date) and "how far along were you" (gestational age) when the US for dating was done? Ultrasounds in the second trimester can be off by as much as a week in either direction, third trimester US can be off by even more. First trimester (1st twelve weeks) should be correct +/- 3 days, I hope this helps. ...Read more
For studies: In order to study obesity, one has to have a definition of what it means to be obese. You can't simply use weight, as 200 lb might be obese for some people but would be a thin person if their height was 6 ft 8 in. Bmi takes into account height and weight. A bmi over 30 is considered obese. ...Read more
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