Hi- I've had std test results negative 2 months ago and didn't have sex until last night. I had unprotected sex 3 times in one night and each time it was a long session. In the third sex session I started to fell soreness on the left side of the bottom of the pe is. I still continued The inter course. A day and a half later I still feel the soreness and I can see bumps. Do I need to worry? I know that stds don't show up in 5 hours so- correct? I think it will be the friction of the prolonged sex but how to make sure? Is there a time frame for the soreness to go away?