im 17yrs old and ive never had sex. for awhile ive had these crimson color rashes on my leg near where my leg connects to my groin. recently theyve looked a purple-ish color more have appeared, and some have gotten bigger. a few days ago i noticed a bump which resembles a skin tag on my groin, near my leg. today in school the area where the bump is has been hurting and when i got home, i noticed there was a purple rash/mark under the bump and there was a small amount of puss around it. i dont know what it is but im starting to get concerned. i havent told anyone about it. can anyone help?