After menstruation 3 days is pregnant with the same room how to return a responsibility

Three days after menstruation, pregnancy in the same room is considered to be caused by ovulation in advance, and changes in ovulation are related to factors such as daily diet, work and rest rules, mental state, etc., and may also be caused by changes in hormone levels; early pregnancy should pay attention to rest, ensure balanced diet nutrition, and timely supplement folic acid.