Lump On Penis Shaft

I have a little lump on the shaft of my penis. It doesn't hurt at all but it is kind of somewhat firm if I squeeze it. It popped up about a week ago about 12 hours after getting a blowjob with a condom on from which I didn't finish. I masturbate somewhat often but I have stopped since I saw the lump. I am 19 years old and I am really scared. I already set up a doctor's appointment for it for tomorrow but I was wanting to see if I could get any answers here first before going in just to help me settle this fear I have. Here are a couple pictures of it...

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Buddy

I think it is only a pimple. If you look at it there is a hair coming out of it. Do not try to pop it. Try to put heat on it or when you take a hot bath. Let it come to a head on it’s own and then you can clean it out.

Take care…ken