I had unprotected sex on Saturday September 28 then on Monday the 30 I had light bleeding for about a week. Not sure if it was my period or not. On October 10 I went to OBGYN to go on birth control for my irregular periods and I told her I was sexually active but I did not tell her I had un protected sex that one time. They did a pelvic exam and said everything felt normal and called back a few days later and said the culture test or whatever ever it's called came back negative which is good. My periods are really irregular and I'm suposed to start tomorrow (October 30) I had slight cramps today and I have been emotional the past few days. I looked at my period calendar and the day I had unprotected sex I was not ovulating. I have had no signs of pregnancy and I'm not sure if that bleeding I had for a week a few days after un protected sex was my period or not??