Oh boy... So I had protected sex with a different partner than that of the past previous 3 years on the 10th may 2019. Condom was used throughout for oral and vaginal sex. After this encounter I have had this ache in my testical which has been on and off for about a week now. I went and got an sti test on the Monday and have had my results come back saying I was negative for all Stis. This still has not put my mind at ease, I went to urgent care and was examined by a doctor who said that there was nothing to worry about in short. I have not developed any other symptoms but the ache still remains and I am terrified it is still an sti or something. Please help!