Hi,I had a protected oral sex(using condom) with a sex worker in red light district in Armsterdam half a month ago, I think the condom did't broke and there are no obvious blood in the worker's mouth, but i do find I might have a bruise or some kind of skin peeling on my penis, there is no wound on it as well as the blood. should i do a blood test or it's unnecessary for me to be really worried? (I don't know if the worker get the HIV or not)