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Doctor insights on: How To Calculate Due Date With Irregular Periods

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How to calculate due date with irregular periods?

How to calculate due date with irregular periods?

Ultrasound: If your periods are irregular, the best way to know how far along you are is an ultrasound early in pregnancy. ...Read more

Dr. Liesa Harte
279 Doctors shared insights

Irregular Menstrual Periods (Definition)

Average women will have a period every 24-34 days. If you do not have a period within this range, you would be considered to have ...Read more


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Unprotected sex onetime with guy a sometime after 1/7 2013 but before 2/2 2013; unprotected sex with guy b from 3/20/13-4/22/13. 5/21 u.S 9w2d; due date dec22, 13. Lmp1/20/13-2/15/13 (irregular periods?

Unprotected sex onetime with guy a sometime after 1/7 2013 but before 2/2 2013; unprotected sex with guy b from 3/20/13-4/22/13. 5/21 u.S 9w2d; due date dec22, 13. Lmp1/20/13-2/15/13 (irregular periods?

Guy B: I don't know if he's going to be happy, but if you calculate 280 days from edc (12/22) backward, it will point to guy b. You could have ovulated that time without getting to have a period later as you got pregnant. ...Read more

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I have irregular periods and my last period was september 23rd when is my due date?

I have irregular periods and my last period was september 23rd when is my due date?

Intermenstrual bleed: It is not uncommon for women with normal menstrual cycles to develop episodes of either bleeding between cycles, missed period, or heavier period than normal. These episodes are due to sudden hormonal changes, possibly due to recent illness, stress, weight changes, certain meds, living with other menstruating women, or pregnancy. If ur at risk for pregnancy get tested. If persists, get evaluated. ...Read more

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I have irregular periods and my due date is August 12., when do you think I conceive?

I have irregular periods and my due date is August 12., when do you think I conceive?

Asked and Answered: Here is the tool to independently verify the previous answer to your same question: http://www. Babymed. Com/conception-calculator ...Read more

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Had sex june 29th and then days between aug 17- sept 10. Found out I was 2-3 weeks sept 22 due date june 5 2014. Could sex from june 29th 2013 be the cause? I have irregular periods also

Had sex june 29th and then days between aug 17- sept 10. Found out I was 2-3 weeks sept 22 due date june 5 2014. Could sex from june 29th 2013 be the cause? I have irregular periods also

Sex Conception: Conception calculators are all over the web and are fun to play with. But, this is easy. To have a due date for this pregnancy it would be 100% absolutely impossible to have gotten pregnant in june. That would be an eleven month pregnancy and you do not need a doctor to tell you that pregnancies do not last eleven months. Your sex for this pregnancy happened 9/7/2013 to 9/12/2012. ...Read more

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When I count bck 40 weeks from my due date 03/12/14 I get 06/05/13 that's not my lmp. But I have irregular periods so is that why it don't go to my lmp?

Possibly.: There are many ways to date pregnancy. Sometimes the last menstrual period is the most accurate method and other times ultrasound is the most accurate method. Your doctor may have simply dated your pregnancy from something other than your last menstrual period. If you still have questions just ask your doctor to clarify. ...Read more

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I had irregular periods. Was I pregnant before 8/2 if an ultrasound on 8/22 dated 6w and 1d, and are now 3 days ahead? (4/16 original EDD now 4/13)

I had irregular periods. Was I pregnant before 8/2 if an ultrasound on 8/22 dated 6w and 1d, and are now 3 days ahead? (4/16 original EDD now 4/13)

Yes: The dating is always off by two weeks. So you conceived 4 weeks before 8/22. The reason for this is that we usually use the last suspected menses for dating which is two weeks prior to ovulation (fertile time is after ovulation. Dating accuracy at that time can be as much as 1-2 weeks off. 3 days is within the margin of error. ...Read more

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Hi I am planning to conceive & I am having irregular periods please tell me how to calculate fertile days. My age is 28 yrs?

Lh kit: Have sex days 10, 12, 14, 16, 18 and should be covered; in addition get an lh urine predictor kit and if positive ovulation will have the next day and would be between days 12-14. ...Read more

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After marriage my periods has become irregular, I don't know how to calculate highly fertile days. Is getting irregular periods after marriage normal?

Irreg. Periods: Your irregular periods after marriage could be due to a variety of factors such as: stress, travel, excessive weight loss or gain, or illness. I would check in with your doctor to see a medical workup is necessary. ...Read more

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LMP 6/15/14. Irregular periods. Had 1 night stand on 8/3/14. If EDD is 4/16/15 was I pregnant before 1 nighter? US said 6w 1d on 8/22 w a HB found.

Dating preg: If you were 6weeks and one day on 8/22, then conception, theoretically occurred about 29 days before the 22nd. This would be about the 24th of July being your date of conception. ...Read more

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I'm 20w3d. EDD Is 9/28/14 had sex before dec.15th with a guy and have very irregular periods. Started having sex with my bf jan 4 or 6 and ejaculated?

I'm 20w3d. EDD Is 9/28/14 had sex before dec.15th with a guy and have very irregular periods. Started having sex with my bf jan 4 or 6 and ejaculated?

Conception: Your baby was conceived from sex on 12/31/2013 to 1/4/2014. Conception calculators are readily available all over the web for you to play with or verify the dates on your pregnancy. I use this one: http://www. Babymed. Com/pregnancy-due-date-calculator ...Read more

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Can one irregular period change your cycle and next period due date?

Can one irregular period change your cycle and next period due date?

Yes: One change in dates alters the whole cycle for that month and subsequent months. ...Read more

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I have irregular period and my due date was 08/16/14 then change when I went to my ob to 08/12/14 so when did I conceive and what days lead to this

I have irregular period and my due date was 08/16/14 then change when I went to my ob to 08/12/14 so when did I conceive and what days lead to this

EDC discrepancy: You have a self stated issue with cycle irregularity. So in this instance the estimate of fetal age at the time you had ultrasound and blood work showed a fetus 4 days older (apparently) than what you thought by dates. That's not unusual. That means most likely you ovulated 4 days earlier than expected by the first date of your last menstrual period. So you are fine. Don't worry, be happy! ...Read more

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How to calculate the fertile period for irregular period.?

Only in hindsight: You ovulate about two weeks before your period and you are fertile for about 6 days before that. If your periods are irregular you really cannot predict ovulation (and therefore your fertile period) ahead of time. ...Read more

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I have irregular periods, my last period start date was april 2 and end date is on april 6, can u please help that when I will get ovulated?

I have irregular periods, my last period start date was april 2 and end date is on april 6, can u please help that when I will get ovulated?

Mid April: Hard to guess with irregular cycles, but I would say anytime between april 12 to april 28 is best guess. Some women with irregular cycles don't ovulate at all. ...Read more

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I am going to get married on 19th of this month so I want my periods early but I don't know the exact date because of irregular periods suggest any tab?

I am going to get married on 19th of this month so I want my periods early but I don't know the exact date because of irregular periods suggest any tab?

Although changes: To your period can occur with hormonal medications - it really doesn't work to expedite a period once with precision timing. If you desire to help regulate your periods - encourage you to discuss with your gynecologist. Congratulations on your pending wedding. ...Read more

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If I had sex on the 13th when is it likely to show positive? I have had irregular periods for a year so cannot go by period dates.

Irregular periods: It's not possible to guess the ovulation day when the cycles are irregular. You can check hmt a week after the expected missed periods. Also, irregular cycles are often without ovulation. Therefore, please discuss this issue with your doctor. ...Read more

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I have a irregular periods and now my period start date was on april2 and last day is on may 6 so what are the chances of date that when do I ovulate?

I have a irregular periods and now my period start date was on april2 and last day is on may 6 so what are the chances of date that when do I ovulate?

Mid April: Hard to guess with irregular cycles, but I would say anytime between april 12 to april 28 is best guess. Some women with irregular cycles don't ovulate at all. ...Read more

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I have irregular periods. My last date was 16.3.2015 and completed the cycle on 23. we regularly had sex from 27.3 to 9.4.15 when can I check pregnanc?

I have irregular periods. My last date was 16.3.2015 and completed the cycle on 23. we regularly had sex from 27.3 to 9.4.15 when can I check pregnanc?

3 weeks after sex: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened). If done sooner, a negative result may be due to testing too early such as less than 2 weeks after conception. ...Read more

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If my due date is December 31st 14, when most likely I conceived considering my irregular periods, period over pregnancy and all the errors margin?

If my due date is December 31st 14, when most likely I conceived considering my irregular periods, period over pregnancy and all the errors margin?

Online calculator: Use a reverse due date calculator for free online and this will be easy for you to find out. Simply type in your due date and the conception date will be calculated for you. To determine margin of error more information is needed. Your doctor can look at the gestational age of your first sonogram and tell you the gestational age. ...Read more

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According to ultrasound on on 27 sep 2012 I was pregnant with 6 weeks so what will be my edd because I hav a irregular period?

According to ultrasound on on 27 sep 2012 I was pregnant with 6 weeks so what will be my edd because I hav a irregular period?

34 wk later: Your results are reported as "menstrual dates". That is, how many weeks you are from lmp.

Due date is calculated as 40 wks from lmp.

Therefore, at 6wk gest age, you have 34 wks til your edd. ...Read more

Dr. Andrew Berry
1 Doctor shared a insight

Irregular Periods (Definition)

The cycle varies from ever 3 to ...Read more