Hello everyone, about 10-12 days ago I had a casual encounter with a woman(both in 30s). We did not have sex, however we had genital to genital contact for about 20seconds. At which point we stopped entirely. The next day or two I masterbated a few times a day as I was feeling pretty pent up. About 48 hours later I noticed a dull ache in my right testicle that lasted for a few hours on and off. I was immediately concerned I got an STD, and began over the next few days began to look for signs and inspect my urethra. I noticed a very slight burn (not pain at all just discomfort) after peeing that lasted 10m or so. So I decided to get an STD test around the 7 day mark in accordance with the testing facilities instructions. I came back negative for Trichomoniasis, Chlamydia & Gonorrhea, and Syphilis. I am still feeling discomfort in my urethra (no crazy feeling of needing to urinate, no discharge) and an off/on dull ache in my testicle area. What is the likelihood that I contracted anything? I’m wondering if I may have a NGU or something else. Should I try and get on antibiotics or wait and see if something else comes up? Should I get tested again? Thanks in advance.