Have Not Had Sex In 4 Months, However, A Week

have not had sex in 4 months, however, a week ago the skin under the head of my penis developed a usclar type sore, used everything I had, cortisone cream, salt water solution, powder by the hand fulls to keep dry. now just using triamsome acetate cream, getting a little better, hurts when I pee as the pee drips on the open sore. go to gym daily, hot tub, now afraid to use it.