If a woman is married and wants to have children, she can go to the hospital for a blood HCG test to confirm if she is pregnant after about ten days of intercourse during ovulation. You can also use a pregnancy test about five days after your period to see if there is a positive result. If you have low progesterone, you can retest your blood HCG every other day to see how the HCG doubles, as most intrauterine pregnancies will show a doubling of the blood HCG every other day. If there is a rise in HCG but it is slow, then the possibility of ectopic pregnancy should be considered, while for women who experience a drop in HCG instead of a rise it could be embryonic death. However, for women who have undergone IVF transfer, this is mainly judged by the time after the transfer, usually around 14 days after the transfer, you can go to the hospital for a blood test to determine whether the transfer is successful. For women with good HCG growth after transfer but low progesterone level, additional progesterone should be considered for fertility preservation treatment.