one your ellergic to the condoms or lube.
Also you could have not used enough lube. an It could have made you start like rashing in that area, I sugest getting in the shawer luke warm (not to hot or not to cold , just in between hot & cold). An wash your self good, But MAKE SURE you get ALL the soap off cause it could make it worse. AN ALSO don't use sented soap.
thats what happened to me with my ex it was awful, but then when i met my new man and had sex with him it didn't happen, i think it was the lube did you use lube