So about 2 weeks ago I received unprotected hand to genital contact from a prostitute while on vacation in Prague. No part of her touch me but her hands and her breasts. I did ejaculate on her hand but no part of her body fluids touched me. 2 weeks have gone by and I did not experience any issues but last Thursday while masturbating I felt a bit of a "friction" feeling on the bottom of my penile shaft that I attributed to dry masturbation irritation so I stopped. Later that evening I noticed a red bump on that area. It is not a blister and does not appear to be filled with any fluid. It is reddish/skin colored but when I stretch my skin it almost disappears and becomes almost impossible to see and sometimes turns white for a bit until it seems blood goes back to the area. My question is I know that while spending hours on this site to try to calm my nerves all documentation I have found say that STDs cannot be spread through hand to genital contact, but I am scared because if that is the case can I rule out herpes, syphilis, or HPV from this and could just be a friction bump that is staying bc I keep examinging it? Or am I the one who got struck my lightning? It has been 5 days and the bump is still there but no changes from when I originally spotted it. I have tried neospirin and it seems to go down a bit when this is applied. I have been tested before this and was clean and have not engaged in any sexual activity until this incident.