I Started My Period On Oct 7, And It Ended

I started my period on Oct 7, and it ended Oct 13, that same day I had unprotected sex. That next morning I woke up spotting light pink, and I've been spotting light pink at least once a day every day since, and it's now the 26. Also an uncomfortable feeling in my abdominal area sometimes, not intense like a menstrual cramp, but an uncomfortable mild cramp. What could this mean. Please help