im scared what is it?

[neal555]

Okay, let me tell the story. I had unprotected oral sex with my now ex girlfriend around last month.She has gum disease, and when she performed, she bit my penis. I noticed that i started to have pain in the bladder and in my back,burning while urinating, itching inside the tip of my penis, itching around my penis head.  so i went to my nurse prac. and i told her my problem. She sent me to the lab to get blood work and a urine culture. So after a couple days. i got the results and they came back negetive. A couple days later i get another call saying that i have a urinary tract infection. After taking the antibiotics for the UTI i noticed that my syptoms were still there. I went back for another urine culture, when the results came back, they told me i had a very bad staph infection. After i took those antibiotics for the staph infection, my bladder pains went away. I went for another urine culture for my follow up after taking the antibiotics for the staph and it came back all clear. I'm now still having itching inside the tip of the penis and on the ring of my penis where she bit me, i also see a little red bump on the ring, but its not pus filled or anything like that, but my penis is very itchy and its driving me insane, what do i do?