My balls are a reddish color, and i have small red bumps on the head of my penis, I ve had ALOT of sex with my partner the past 4 days, and only just showed up today. Kind of itchy, but not really, just a bit of discomfort... I hadn t had a shower the other night after some heated intercourse, and didn t have a shower the next day till the afternoon (This is when I saw it) I didn t notice it before or after our intercourse.. Thrush or STD?