You had no risk of HIV and are so safe that you don't need to test.
HIV is instantly inactivated in air and also in saliva which means it is effectively dead so it can't infect from oral activities. It doesn't matter if you and they were actively bleeding or had cuts at the time either because the HIV is effectively dead. The csw knows this was a no risk activity so that is likely why she allowed it.
Only adult risks are unprotected penetrating vaginal or anal sex or sharing needles that you inject with but you didn't do that so you had no risk. This sentence is all you need to know to protect yourself against HIV.
Even with blood, lactation, cuts, rashes, burns, etc the air or the saliva does not allow inactivated virus to infect from oral activities. The above HIV science is 40 years old and very well established so nothing you can add will make your situation a risk.
No one got HIV from oral activities in 40 years of HIV history, so likely no one will in the next 40 years of your life either.
There are many causes of a rash so see your doc if concerned but it isn't HIV.
You can't get HIV from oral or when you used the condom so you are safe. Rashes have many causes, and they may have existed previously but you didn't pay attention.
AnxiousNoMore sounds good! That was my first sexual encounter in life but i am worried about rashes,i had never seen thous kind of rashes before, 9 month back I had ring warm infection.since then I was taken itraconazole 200 mg tablet. earlier I used to take tablets per day but after 3 month later i had never taken any single tablet may be Is it a side effect of thous tablets.......I am living half dead because anxiety.