So my boyfriend and I have been having sex for almost 3 months now. I have the implanon in my arm, about 4 days after we had sex the first time he broke out in a rash all on his pube area. We thought it was just irritation and would go away but it didn't unless we went several days without having sex and then as soon as we would have it again it would come back the next day. We both went and got tested just in case it was an STD but we are both clean from everything. I don't get any rash and he gets it wether we use lube or not and even when he doesn't shave or anything. Anyone know if he could be allergic to something that has to do with the implanon? We cannot figure out what it is