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Chances of Pregnancy after having unprotected sex-Pregnancy factors.

Dr. Adil R, MBBS


I have unprotected sex, Could i be pregnant

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 successful pregnancy depends. But the failure of condoms and 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 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 egg. A Woman who has menstrual cycle of 28 days, ovulates (release egg) on 14th day of menstrual cycle (the day when bleeding starts is first day of menstrual cycle). Egg survives for 24-48 hours. Male sperms survive for 3-5 days. so the fertile periods in this woman ranges from 10th to 16th day of menstrual cycle. If sexual intercourse has taken place on the days other than these, then the chance of getting pregnancy is rare.
3. Quantity of sperm.
Not every male ejaculates enough quantity of sperm and 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, Quality matters too. 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 vagina which may kill sperms.
6. 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 cervix) and uterine fibroids decrease the chance of getting pregnant.
7. Condition of Fallopian Tubes.
Fallopian tubes that carry egg from 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. 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 large ovarian cyst, polycystic ovarian disease affect ovulation.

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

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