So I’ve been dating this girl for 3 months since July 3rd to now. I got a full panel std test before we started dating everything came back negative. The first time we had sex was middle of September. She just recently went to the doctors bc she presumed that she was having her period on off for 3 weeks so she was worried. She got tested and has chlamydia. She thought it was me so I told her I had a full panel. So I just got tested and it came back negative. She said the last time she had sex was in March and she never got tested after that. Do u think it could be dormant for that long and just show up. Why am I negative and she is positive