If there is a small amount of coffee-colored discharge when you should have your period and you end up being clinically checked for pregnancy, it is mainly due to luteal insufficiency. In this case, if you are pregnant, there is a possibility of pre-eclampsia or miscarriage due to luteal insufficiency. Therefore, if a gestational sac is found in the uterus, a blood test for progesterone should be taken, and if the progesterone is relatively low, a supplement should be given to avoid the possibility of miscarriage in clinical practice. When you are just pregnant, you must give proper rest, do not have intercourse in the first trimester to avoid the possibility of miscarriage, and it is recommended to go to the hospital for regular checkups to understand the development of the fetus and deal with any abnormalities in time.