So I will first start off my saying that my period is not at all regular. I have my period 3-4 times a year. So I had my period first week of August like I do every year. August 30th I had unprotected sex with my boyfriend. 5 days later I had a very light pinkish discharge that lasted 1 day. It stopped then a day later my period started and lasted 3 days. Light but not like the bleeding I had 2 days before. I didn't even come close to filling a pad after a full day.