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ok to really answer this you need to know what your cycle is, whether it is 28 days or 30, 32, 35 anything like that, if it is 28 days the most common cycle, than it is 14 days after the first of your last period, or 14 days before the start of your expected period, if it is a 30, 32 days cycle any thing like that it is half way after the first day of your last period, and that day is where you are ovulating, 3 to 4 days before and after you are ovulating you are fertile, which means that you cuold posibly conceive on those days or your vagina has the best conditions for sperm to live until it can fertalize the egg when you ovulate, hope this is what you meant

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Q: My period lasts for 3 days usually how do you calculate my fertile days?
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You were on your period 3.7.08 when are you due on?

It depends how long your period usually lasts for


When do you get off your period?

it usually lasts 6 or so days


Are you able to get pregnant if your period last for 3 or 4 days?

Yes, you're able to get pregnant if your period lasts for 3-4 days. How long menstruation lasts doesn't impact whether or not you can get pregnant, what matters if ovulation and the fertile phase. If you want to avoid pregnancy then always assume you could be fertile and use birth control.


Your period last for 3 days can you still conceive?

Yes. Every woman's period is different. A period that lasts only three days will still expel an egg, and a woman is still fertile afterward.


Dose a period last for one day?

No it usually lasts for 5-10 days.


How long are you on the period?

when you get it, usually for the first couple of years your period is erratic and skips months, and lasts really long or really short. after a while, your period regulates and only lasts about a week or a little longer per month


When does the female allow the male to mount?

What species are we talking about? In most livestock the female's fertile period lasts only a day or so. This is when she will allow the male to mate with her.


Is ovulation a period?

A woman's fertile period during her menstrual cycle, on average, lasts about seven days: seven days before ovulation (the release of the egg), the day of ovulation, and the day after ovulation. After this, chances of conception decrease quickly, as the egg has a short life-span of about 24 hours.


Your period usually lasts 4 days you are now on day eight?

If you have unprotected sex, could be a miscarriage?


What does it mean if your period lasts longer then 7 days?

What it means when your period lasts longer then a week is usually stress related. It also can mean that your hormones are changing and altering your cycle. Sometimes the birth control you are on affects the amount of time you're on your period too.


How long does the heaviest part of your period last for?

usually only a few days. It depends on the person. if your period lasts usually around 6 days then it will only last about 2, in the middle.


How many days the fertility period last?

In human women the fertile period lasts for three to four days and occurs just prior to ovulation (about 14 days before menstruation). There are a variety of methods for locating the exact time at which a particular woman may be at her most fertile including several commercially available products.