Chances of Pregnancy after having unprotected sex-Pregnancy factors.

What are the chances of pregnancy after having unprotected sex? This question comes in every woman mind who has had unprotected sex. Pregnancy depends on many factors. Unprotected sex is one of the basic factors on which occurrence of a successful pregnancy depends. But the failure of condoms and the rate of pregnancy after protected sex is 2 %. It means 2 of 100 women who have had protected sex (condom protected) may result in pregnancy. It means that protected sex is not 100% preventive.
On the other hand unprotected sex does not always result in pregnancy. There are various factors which are necessary  in order to get pregnant
Some of the important factors are stated below:
1. Age of women:
Sexual intercourse before puberty and after menopause won’t result in pregnancy.
2. Ovulation:
Pregnancy won’t occur if the woman hasn’t released an egg. A Woman who has a menstrual cycle of 28 days, ovulates (release an egg) on 14th day of the menstrual cycle (the day when bleeding starts is the first day of the menstrual cycle). The egg survives for 24-48 hours. Male sperms survive for 3-5 days. so the fertile periods in this woman range from 10th to 16th day of the menstrual cycle. If sexual intercourse has taken place on the days other than these, then the chance of getting pregnant is rare.
3. The quantity of sperm.
Not every male ejaculates enough quantity of sperm and the quantity of sperm is usually low in those males who ejaculate more frequently. For pregnancy to occur, the quantity of sperm should be more than 20 million per ml of the ejaculate.
4. Quality of sperm.
It is not only the quantity that matters, But Quality also matters. At least 70% of the total sperm ejaculated in semen should be healthy, well-formed and motile.
5. Vaginal Infection or discharge.
Vaginal Diseases and Watery vaginal discharge or yellowish or whitish vaginal discharge indicates infection ( whitish vaginal discharge of low quantity can be physiological and normal click here to read about the causes of whitish or yellowish vaginal discharge). Infection alters pH of the vagina which may kill sperms.
6. The condition of the uterus and cervix.
Uterus and cervix should be healthy. Uterus and cervix should be of normal size and physiology. Cervicitis (infection or inflammation of the cervix) and uterine fibroids decrease the chance of getting pregnant.
7. The condition of Fallopian Tubes.
Fallopian tubes that carry the egg from the ovary to uterus should be patent and of normal anatomy and physiology. Any blockage, infection or narrowing of fallopian tubes may result in ectopic pregnancy and loss of pregnancy.
8. The function of ovaries.
In order to get pregnant, at least one of the ovaries should be healthy and capable of producing eggs. Ovarian diseases, such as a large ovarian cyst, polycystic ovarian disease affect ovulation.

Therefore, there are many factors on which pregnancy depends. It's not only the unprotected sex. There could be many more factors, but these are the basic factors on which pregnancy depends.