My first diagnosis of an STI was during my earlier (more risky) teenage years. I had come in contact with Chlamydia. That was scary enough - knowing it was 100% curable. February of this year, I went back for a regular routine STD test and tested positive for Chlamydia (again). Since I have an IUD, and frequently get B.V I experienced no symptoms. All other tests came back negative. This past week I have had a very itchy anus area. I have not had sexual intercourse since January this year, since being treated for Chlamydia, but have messed around with a guy without clothes (about a week ago). This morning I woke up with a cluster of blisters somewhat yellow in color on the upper portion of my butt crack . With having being treated for Chlamydia multiple times, I'm quite embarrassed to possibly having to go back to my doctor with the concern of herpes. I've never had anything like this before, could it possibly be herpes?