The main reason why women check blood hCGhCG 0.1 but later get pregnant is because it is too early to check blood hCGhCG hormone and the hCGhCG inside the blood is not yet elevated. After a woman has intercourse, it takes a certain amount of time for the sperm and egg to unite, and after the fertilized egg has successfully united, it will slowly wander to the uterine cavity with the peristalsis of the fallopian tube and make a bed. The fertilized egg will not secrete hCGhCG hormone until the gestational trophoblast cells are in bed (usually at least 7 days after ovulation), so it will cause the hCGhCG hormone inside the blood to rise until the day after the bed. If a woman checks her blood hCGhCG immediately after intercourse, at this time the fertilized egg has not yet united or has not yet bedded down, of course the blood hCG will show 0.1 of non-pregnancy, and as time goes by, the fertilized egg unites and bedded down, there will be gestational trophoblast secretion of hCGhCG hormone, which causes the blood hCGhCG hormone to rise, and at the same time the fertilized egg develops in the uterine cavity to become The hCGhCG 0.1 will appear, but then the normal pregnancy performance, so women should not be checked too early after intercourse, it is generally recommended to check the blood hCGhCG about ten days after intercourse to be more accurate.