I went to the doctor about a month ago because I had a slight ache in my left testicle. He thought it could be Epididymitis, but after doing some research, I determined that the symptoms didn't feel right, but I started taking some D-Mannose to get rid of any bacteria if there was any. The soreness has pretty much gone away, but now I have this occasional slight fluttering in the groin area. Have any ideas of what this might be? Everything else seems normal with the urinary tract. 6'2" 183. 64 Years old.