The tip of my penis stings some around the hole. All I've ever done is get blowjobs which happened recently. I asked the girl if she had stds. She said no and that she wouldn't be doing that if she did. Anyone know what it may be if it's not an std?

Edit: The chick said she got tested on the 4th of June and was clean but didn't tell me that until late yesterday. So I went ahead and got tested just to be safe. She hasn't done anything with anyone since she she broke up with her boyfriend since 4 months ago supposedly. So I'm pretty positive it's nothing bad. Thanks for all the help. I won't get my results back until tomorrow but I'm pretty sure I don't have anything.