Generally, during the second day of a woman's menstrual cycle, the egg released during ovulation is still maturing, explains Family Education from Pearson Education. This means it is highly unlikely a woman becomes pregnant. However, it is not impossible, notes the American Pregnancy Association.
Women who have menstrual cycles shorter than 28 days could potentially begin ovulating early enough for pregnancy to be possible if they have intercourse on the second day of their cycle, according to the American Pregnancy Association. Ovulation occurs between the 11th and 21st days of a woman's menstrual cycle. Women looking to conceive have their best chances during these dates. Women looking to prevent pregnancy should use appropriate birth control whenever they have intercourse, regardless of where they are in their menstrual cycle.