Hi I'm a senior in high school (17) and I have a bump under the head of my penis that comes out only after a little time after I have an erection. This is killing me because I cannot have sex with anyone or try to have a relationship with someone because I don't want to reveal this secret. I have had sex with only one girl a lot of times and have had oral done to me by a different girl a couple of years ago. I am scared this might be something serious because it hasn't gone away for about 2 months now.. I really need help is this an std or is this curable?

I think at this point you should see the doctor, just to make sure that it's not something serious.

You should really see a doctor because you don't know what it is. Just to be on the safe side. They can not tell your parents so you need not to worry about that. That HIPPA LAW is a wonderful thing. I worked in the medical field for a long time. So if I was you I would go to the doctors just to be on the safe side. Because if it is something serious you don't want it to go untreated.