I've been having a slight burning pain at the tip of my penis since late yesterday. It's more annoying than painful, and has gone away every once and a while. Along with this, I have had pain in the groin area, but that's only been after I have used the bathroom. My urine does not have any blood in it, nor is it cloudy. There is no discharge, and my ejaculate looks normal, too. Should I be worried about these symptoms?