I was sexually active with my girlfriend for 6 months, when she finally told me that she had herpes. We had sex a day before this, and immediately after finding out I went to get tested. The test results were negative, however, a couple weeks later (not having had sex since then because I was still emotional about the situation), I got a rash on both sides of my inner thigh, groin area. They went away about a week later but quickly came back much worse on the left side only. https://ibb.co/jrWQbQ
Ones closest to my buttocks are newer. Is this herpes?