i had unprotected sex a week ago and since then i have been having pains below my abdomen and a boil has just developed. could this be staph?
I assume that you mean you have the boil in the pelvic/groin region when you say “below the abdomen”. Not too sure if you mean an actual boil or a lump that could be a swollen lymph node. You need to see a doctor. It could be related to a sexually transmitted disease (STD). If it is a staph infection, your doctor will verify this and treat it appropriately.