Question

why does menstruation not occur after fertilization ?​

Answer 1

Answer:

one of humans released by one of the ovaries once in about 28 days during the ovulation period the wall of the uterus become thick to receive the fertilized egg if the fertilized egg is received by the uterus it leads to pregnancy if the fertilization doesn't occur the unfertilised egg along with thickened lining of the uterus is shed accompanied by the blood

Answer 2

Answer:

If the egg is fertilized by a sperm as it travels down the fallopian tube, then pregnancy occurs. ... If the egg does not become fertilized, the lining of the uterus (endometrium) is shed during menstruation.