Hi, well, about a month ago my boyfriend and I had sex and I started bleeding afterwards...This was realy abnormal so I saw and doctor and found out that I had a bacterial infection. So, I got antibiodics for it and treated it. I was supposed to start my period on the 1st and I am late. This is very unusual for me because I always start at the same time...It's like clock work. Is this a normal symptom? Please let me know if i should go see a doctor... I appreciate your time and help!