Also i get from time to time some tingling or slight discomfort in my Penis which goes away quite quickly
I don't have any discharge or pain when Urinating.
I also have some itching on my body with a couple of tiny bumps appearing on my arms. I don't know but I feel my body is fighting a Virus
During sex, there is a physical action that can cause discomfort. It's actually quite normal. Sometimes, skin reacts against the lube contained inside condoms and it can cause irritation. As your penetrative sex was protected, there is not too much to worry about.
Your performed oral sex on that lady, which exposed you to gonorrhea, syphilis and herpes. You said you tested for all of them 3 weeks later. That time is a good window period for gonorrhea, but not enough to get a clear result for you syphilis and herpes tests. You should wait for 6 weeks before getting tested for syphilis, and 3 months for herpes.
Rubbing is a negligible risk for STDs. Theoretically, if that lady was affected by syphilis or herpes, and your skin touched the lesions caused by these infections, she could have passed them to you. The infection can also take place in presence of vaginal fluid even if there were not lesions.
I recommend you to expire the window period for all those STDs as I showed you before, getting testes and then moving on with your life.
All the best.