The redness in the second month of pregnancy is considered to be due to the following reasons: a. Pre-eclampsia, if the embryo is developing well and the pregnant woman sees redness with abdominal pain and falling, it is considered to be pre-eclampsia, it is recommended to take blood test for HCG and progesterone for fetal preservation treatment. Embryonic abortion, if the ultrasound reveals that the embryo is poorly developed and there is no fetal bud and primitive heart tube pulsation, it is considered to be embryonic abortion, and it is recommended to perform the operation to clear the uterus in time. Third, bleeding caused by cervical inflammation, if the pregnant woman has previous cervical inflammation or cervical polyps, etc.. If the pregnant woman has previous cervical inflammation or cervical polyps, the congestion of the reproductive organs will cause cervical bleeding after pregnancy. The implantation bleeding occurs when the embryo is implanted. The bleeding in this case is small and will not affect the growth and development of the embryo or the health of the pregnant woman.