Could My Swollen Right Testicle After Groin Pain Be Due To A UTI, STI, Or Sports-related Strain?

Had groin pain on right of penis on Monday and then it left and went to swollen testicle on same side such that it looks like a one testicle. I do play alot of sports and put torque on right side. I do have very tight musculature and possible normally dehydrated. But this swollen right testicle is concerning. Maybe UTI or STI? 1. Can i