Patient: I was recently diagnosed with Chlamydia and my boyfriend and i took our antbiotics infront of each other. Well i got my period january 27 and it was 3 weeks late. The bleeding was abnormally light. Before we knew we were infected, we were having intercourse and i began bleeding. The bleeding stopped in an hr. Well, i began having horrible lower right side pelvic pain and now tonight, i am bleeding pretty heavy and its not time for my period. We have not had sex since before we took the antibiotics. It is not time for my period.