First, assuming you are in the US or other industrialized country, it is unlikely your partner had HIV
. Among most sex workers in such countries, fewer than 1 in 1,000 have HIV
. Second, HIV is rarely if ever transmitted by the sort of exposure you describe. Third, you don't describe the "sores" enough to allow any judgment about the risk. Are they open sores? Bleeding? What is the cause? Do they come and go (e.g., herpes)?