Hello, My name is Kristina. I ve recently found a bump on my private area. (The size of a pea) It felt not only big on the outside but under the skin I could feel the big ball as well. So I popped it, and I felt it burst open and I looked, and yellowish, Greenish mucus was coming out of it. I m really worried I might have an STD because I ve recently had unprotected sex. So please help me figure out what this could be.