My testicles have had a redness on them for the past month and a half. It seems to get better at times but after I ejaculate they get even brighter red for about a day or two and then it dies down again but never completly goes away. I've had a hard time acheiving full erections? My testicles don't itch and i'm almost positive it's not a rash. I've tried using anti-fungal cream, and other over the counter treatments and nothing seems to help. I've been tested for Std's and that came out negative, I feel stuck! Does anybody know what the problem might be?