Can STD tests be wrong? I'm 16 and female. In March I lost my virginity, I got a chlamydia test which came back and said I had chlamydia. I got treated and it's now gone. I also went to the clinic 2/3 months ago to be tested for gonorrhea, genital herpes and genital warts, the results came back and said I was clear. I was wondering if it may be wrong.... Because last night I noticed two spots on the outside of my vagina, like, on the 'lips' and they may just be spots but then I over-think things and now I'm worried it's herpes or warts or something. I've not had sex since that one time when I lost my virginity by the way.