Is this possible to get pregnant after 20 days from ovulation?

No, it is not possible to get pregnant 20 days after ovulation.

Ovulation occurs when a mature egg is released from one of the ovaries. The egg travels down the fallopian tube, where it can be fertilized by sperm. If the egg is not fertilized, it will break down and be shed during menstruation.

The fertile window is the time during each menstrual cycle when pregnancy is possible. This window begins 5 days before ovulation and ends 1 day after ovulation. So, if you ovulate on day 14 of your cycle, your fertile window would be from day 9 to day 15.

If you have unprotected sex during your fertile window, there is a chance you could get pregnant. However, the chances of pregnancy decrease the further you get from ovulation. This is because the egg is most likely to be fertilized within 24 hours of being released.

After ovulation, the corpus luteum forms. This is a small gland that produces progesterone, which helps to thicken the lining of the uterus. If pregnancy does not occur, the corpus luteum will break down and progesterone levels will drop. This will cause the lining of the uterus to shed and menstruation will begin.

So, if you are 20 days past ovulation, it is very unlikely that you are pregnant. However, if you are experiencing any symptoms of pregnancy, it is always best to take a pregnancy test to be sure.