I don't know what tissue type underwear is - is it fabric or paper? Herpes and other STDs don't go through fabrics.
You had a condom on? It is very unlikely you got herpes from doing this. Can they do a type specific IgG blood test where you are?
As you were told, it is highly unlikely that you got anything from this encounter, your testing hasn't been very accurate, and you need to stop looking at your penis, or it will cause irritation.
Herpes doesn't cause abdominal pain or testicle pain. That could be from the prostatitis.
Stop pressing on things. That won't help. I don't know what the white patch is. It's not an STI.