After coitus during menstruation, if you feel general fatigue, sleepiness, and lack of energy for several days, could it be pregnancy?

Patient's question:

No

Doctor's answer:

Pregnancy is primarily caused when a woman has sexual contact with a man during her ovulation period, leading to the combination of sperm and egg. In your case, it would not result in pregnancy. It is likely due to the deficiency of both qi and yin.