Generally, as long as your period lasts around 3 to 7 days, reasonable day-to-day variations in flow are considered normal. Even though periods might differ from woman to woman, consistency in the , This post is great and very helpful. However, I still don’t understand why my period would stop on the third day. Everything going on within my body doesn’t know that it’s my third day. Seems like it would stop on different days each cycle no matter if it’s the levels dropping, flexing, diet and exercise, etc., If you are wondering why my period stopped and then started again 2 days later with a light flow, endometriosis could be the reason. You can look for additional symptoms like pain while urinating or having intercourse, pain in the pelvic region, and painful bowel movements., a period lasting less than 2 days or more than 8 days; heavy bleeding (one or more tampons/pads every hour for several hours) severe cramping or other pain, Feeling especially frazzled can impact your period. Research shows that stress can slow down or even stop the production of gonadotropin-stimulating hormone (GnRH) by your brain's hypothalamus , If your period stops then picks back up the next day, see your doctor to uncover potential hormonal, structural or health issues needing evaluation. Sudden heavy bleeding warrants prompt medical attention. Addressing the root cause can get cycles back on track. FAQs Why would my period stop mid-cycle then return the next day?.