What Causes Pimple Like Bumps On Scrotum?

Hello. I am 18 years old. Now first of all I ll come out and say this before I talk about my problem. This has been an on going problem for about 2 years now and I m too scared to go to the doctor and get checked out because I don t wanna know if I have herpes or aids. Okay, so, I have lots of pimple like bumps on my scrotum and I ve been popping them regularly, now, there are a couple of pimples that are very big and white and have been on my scrotum for over a year. These pimples do not pop on their own and in order to pop them I have to use a ton of pressure in order to pop them. The smaller ones are white and look like they are about to burst, so I pop them and the substance comes out in a stringy form, like a pimple would. Now the bigger ones.. I haven t been able to pop some of them (I only have a couple of bigger ones) and I just recently popped a bigger one that was at least a year and a half old and green pus came out of it.. lots of it.. please tell me what I m infected with, am I going to die? IMPORTANT: Once I pop them, it seems like the pus just comes back into the same white spot.. and the big one that I popped a couple days ago is already hard and I can t pop it but I can definitely feel that there is something inside of it.