Bump on Penis

For several years I have had a bump on the bottom part of my penis about an inch up from the bottom. It has never hurt, and once about three years ago I tried to pop it and some dark cheesy discharge came out and it kind of went away for a few months only to come back. Lately, I have just ignored it, but the other day I started messing with it again trying to pop it. It never hurt but was just something that bothered me. I wasnt' able to pop it, and now it kind of hurts. Like a 1 on a pain scale of 1-10 whenever I rub it by walking. This happened about 3 days ago and now its got me worried. I have been dating the same girl for two years and have never cheated and I know she is clean because she gets tests for birth control every six months, but I still worry that it might be something serious. Is there any treatment I can do for it? Should I see a doctor? It is kind of hard and there is only one bump. It doesnt really look like anything I've seen online. It is now also a little red and inflamed since I tried popping it and is about the size of a small pea. Thanks.

[mystery333]

this is the only one i read that is a bump on the penis and has a black discharge, my boyfriend has a similar bump and it is like a sliver with a small hole that every 6 months you can squese stuff out of it.  when examining it, it almost looks blueish under the skin.  it is small and barly noticable.  but it is hard when taken inbetween two fingers.  we know it is not an std because he has had it since 6 grade or so... but we have no idea what it is???