'It takes about 6 weeks for your body to be in a 'non-pregnant' state, so around a month after that', advises Dr. Nicole Stamatopoulos, OBGYN. Although, if you're breast/chest feeding, your period may take longer to return. 'If you don't see your period 3 - 6 months even after you cease breastfeeding, see your Doctor', says Dr. Stamatopoulos.