I woke up around 5 today after a four hour nap(been really tired lately and my boobs are swollen but not really sore) and noticed some light pink bleeding accompanied by mild cramps but nothing really that noticable. I usually have a 28 to 31 day cycle. I had unprotected sex on the 19 and 25 of October and the 2 or 3 of this month! I usually have my cycle timed but I lost track this time and let him go inside of me. My last period was October 7-11 off and on. Could you tell me if this is implantation bleeding or am I just over reacting?