Last month i started spotting on the 16th and it went on for a week and stopped. Last saturday i started back spotting up until today and now its getting lighter. when i went to my gyn last week she gave me birth control and told me to come back for a ultrasound, im not pregnant. also, i have pain on the left side of my pelvic/ovary (im not sure) im on my 2nd dose of the guardasil shot, and i havent had any period symptoms in almost 2 months.my last normal period was in may of this year.im scared because idk if its a cyst, or some kind of infection. my bf and i use condoms faithfully..n e ideas on what this could be?? also im not having any discharge, except right before i start spotting, the discharge is watery/white, but doesnt smell.