What are the chances of getting pregnant after just having your period?

ANSWER

It depends on duration of the period: if period was during 3 days, one day more is day 4 which is not fertile; if period is long about 7 days, one day more is day 8 which is the beginning of fertile days. In general the chances for pregnancy 1 day after period are about 1%.

Important to know. In the middle of the menstrual cycle (on 13-16 days) ovulation occurs - the dominant egg is released from the follicle and is drawn into the fallopian tube on its way to the uterus. This triggers a host of hormonal secretions - including estrogens - that thicken the uterine lining to support a pregnancy. Women are fertile for about 24-48 hours around the time of ovulation (before and after ovulation).

But how long can sperm survive in a woman? The answer is a very difficult one and depends on a large number of variables including the individual longevity of sperm, the internal metabolic capacity of sperm, the environment of the vagina (body temperature, pH levels, relative acidity), the presence of cervical mucus, the quality of cervical mucus, the ability of the sperm to get out of the vagina and into the womb, and the presence of sperm antagonists like immunity securing white-blood cells. If consider the most ideal conditions (ideal vaginal/uterine environments, fertile eggs, strong sperm health, etc) sperm may be able to survive between six and seven days. That's about a quarter of a typical menstrual cycle - and that means an extended window of fertility before ovulation. In most cases, however, we can assume that there will be realistic factors that may decrease sperm longevity or inhibit sperm movement. First of all, the sperm need to get out of the vagina and into the uterus (through the cervix). If the sperm can't make that initial leg of the journey in a few hours, most will end up dead shortly thereafter. Now, if fertile-quality cervical mucus is present and abundant, and if the sperm make it to cervix and the womb, then sperm life-span can be extended. On average, we can expect sperm to survive just a day or two, and given more optimum conditions or luckier happenstance, a handful of days more. Of course, with each passing day more and more sperm die and the odds of conceiving diminish.