My boyfriend of 7 years has had sex with uncountable women off the internet and never used protection,and I have on ly been with him,a couple of months ago I noticed sores on his buttocks and he said it was just pimples that get irritated by sitting in his computer chair,so after awhile they seemed to clear up,but leaving scars,then just recently I noticed they were back again,and I also n o ticked a lot of Neosporin in the cupboard,and I m n poo t very smart about all the diseases out there,but I have lupus,failing kidneys,and a lot of other life threaten ing illnesses.I right now have an itch on the side of my vagina but no sores,what should I do?