Not being a doctor, I can't say for sure, but I can tell you about one experience I had.

When I was in college, I had a couple of bumps 'down there.' I discovered them while taking a shower and went to our college health department. The doctor said they were genital warts, froze them off, and that was that. The annoying thing is that I was told you can only get genital warts from sexual activity and I was not nor had ever been sexually active at that time. I think they thought I was lying--how can a person be in college and not have had sex yet?!

Anyway, I still don't know what it really was, but I think there are a few options that don't point to herpes.