I'm 19 and have had a bump on the rim of my penis tip for about 4 years now. Not sure what this could be, I had this way before I lost my virginity but have been to embarrassed to talk to the family doctor about it. It's small flesh colored but when squeezed a small amount of stringy puss exits, but when touched still doesn't hurt. Please Help!

You need to get over the talking to the doctor because as a man, he is going to be looking at it all as you mature in life.

It can be something as simple as a skin tag ( don't squeeze) or it could be something more serious as Venerial Warts
But it could be a dozen other things. It needs to be looked at.