Suggest Treatment For Itchy Rashes On Pubic Area And Buttocks

hi i have a rash on my private area and i thought it was ingrown hairs from shaving but it is spreading to my lips and my butt, i looked up stds and its not them thank god but they itch and it hurts when i strach i don't know if i am irrating it or what i go to school full time and on my days off i work and i don't have time to see a doctor i even took a bleach bath i need help