I had intercourse on the 13th of September, and a few more times during that week. My periods were due around the same week itself. We had used protection and my partner is sure he didn't ejaculate inside. It was itching for a couple of days after that. I bleeded for a day or two after that but that's all, no periods till date. I have PCOD. Should I use over the counter kits before going to the doctor? Have had such false alarms a couple of times before as well, the doctor suggested to not overthink all the time.