The truth is many of STIs have no signs or symptoms in the majority of people infected. Or they have mild signs that can be easily overlooked. This is why the term âdiseaseâ (as in STD) is starting to be replaced by infection (or STI). The only way to know if you have an STI is to get tested. Lots of people are confused about getting tested for STIs. For example, you may think your annual medical check-up will include tests for STIs, especially if your healthcare provider knows you are sexually active.
Human blastocysts should hatch from the shell and begin to implant 1-2 days after day 5 IVF blastocyst transfer. In a natural situation (not IVF), the blastocyst should hatch and implant at the same time - about 6 to 10 days after ovulation.
If one of the sperm cells penetrates the egg, the egg is fertilized and begins developing. The egg takes several days to travel down the fallopian tube into the uterus. After it is in the uterus, a fertilized egg usually attaches to (implants in) the lining of the uterus (endometrium). But not all fertilized eggs successfully implant. If the egg is not fertilized or does not implant, the woman's body sheds the egg and the endometrium.