How many times can a woman get pregnant in one night during regular sex?

A woman can only become pregnant once per menstrual cycle, as she typically releases one egg during ovulation. However, if she has multiple sexual encounters with different partners on the same night, it's theoretically possible for her to be inseminated by sperm from different men. That said, the likelihood of this happening in a single night is quite low, and the timing of ovulation plays a critical role in the possibility of pregnancy.