Ovulation Period Calculator

Linda asks…

Is ovulation best calculated 2 weeks after 1st day of period, or 2 weeks back?

For example, if your period starts December 1 and December 31, so you have a 30 day cycle, would it be more accurate to count 2 weeks forward from December 1 and estimate ovulation at December 14, or count 2 weeks back from December 31 to December 16? The online calculator I used calculated backward.

Pregnancy Advisor’s answers:

It’s more accurate to count backwards. It takes about two weeks between ovulation and your period, and that’s pretty consistent across all women and all cycles within the same woman. That part of the cycle stays basically same regardless of how long your total cycle is.

The time between your period and your next ovulation is a lot more variable. This is the part that gets longer or shorter in different women or at different times in the same woman.

Jenny asks…

Pregnancy…off schedule period ?

I’m 31 not on any form of birth control. I’m regular with my periods every 28days. I had my period April 7-10. And again May 4-6(a day earlier or later perhaps). On may 24 which was a Monday I spotted a pinkish color on my panty liner. The next day nothing….then wed. And thurs. Was like a light period flow. (and this all being only 3 wks after the start of my last period..and about 10days before the start of my next scheduled period)

By ovulation/period calculators going off that last sight of blood as a “period“…I was due for my period sun/Mon. Id say Tues the latest. I’ve been feeling light cramping and have even inserted paper inside to see if there was any blood..on its way.??? And just white milky discharge. I’ve been sleeping like a bear….I did get a sinus bug from the boyfriend….I chucked my lack of energy to that. And the fact we just moved….I chucked my early period to that…hmmm

We were kinda trying to get pregnant ….but wasn’t so sure it would happen this quickly considering my bf’s reproductive concerns.


Pregnancy Advisor’s answers:

Yes, wait a few days.

Nancy asks…

What is the likely hood of getting pregnant 3 days after my period.?

My boyfriend and i had sex today, three days after my period. We did not use protection. I calculated on Webmds ovulation calculator and it said my most fertile day is 11/2. Today is the 1st.
What is the possibility that I’m pregnant?

Pregnancy Advisor’s answers:

It’s extremely high.

Sperm can live inside a female for up to 5 days. That’s why it’s unsafe to have unprotected sex before you ovulate!

If your next period is late by more than a week, take a pregnancy test. You can buy one at virtually any supermarket or drugstore, and they’re normally very accurate. Or you can get one done at your local Planned Parenthood health center. If it turns out that you are pregnant and don’t currently want to be a mother, go to Planned Parenthood — the doctors and counselors there are EXTREMELY helpful and can help you decide what to do.

I hope that helped!

Carol asks…

How Accurate are ovulation calculators?

My period came down on March 31st. Some Ovulation Calculators said that I had a god chance of getting pregnant from the 14 to the 17th of April. I had sex late night on the 15th. I thought you were only fertile to day 14. We are trying and it would be great if we are, but the calculator seems off. Is it correct? Please help.

Pregnancy Advisor’s answers:

They give a large ball park approximation. The best way to determine ovulation is with Ovulation Predictor Kits (sticks) OPK’s or taking the daily waking basal body temp. When you notice a THERMAL SHIFT sometime mid-cycle, your ovulation is going to happen. Sign up with fertilityfriend.com and start charting!!! Otherwise continue having sex every other day!!

Fertile day 14 is only true for people with 28 day long cycles. In addition, other factors can delay ovulation, or make it occur earlier (i.e., sleep deprivation, stress, diet changes, etc.)

Sandra asks…

What are the chances of becoming pregnant on this date? I used the online ovulation calc.?

Ok so I started my period on the 18th July and I just used an online ovulation calculator and It said my ovulation should be the 2nd or 3rd August… so If me and my partner try on the 30/31st what would that chances be? slightly high???? percentage??? have any of you become pregnant this amount of days before?

Pregnancy Advisor’s answers:

If you truly are ovulating on the 2nd or 3rd unfortunately your chances are 0%

BUT this may not be your dates because every woman’s cycles are different, I would suggest you buy an ovulation test kit from the drug store they are wonderfully accurate, helped my husband and I get pregnant on our 2nd month of trying. BUT even if you are together at the right time the chances of a healthy women getting pregnant are still only 1 in 5 each month, so don’t get discouraged if it doesn’t happen right away.

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