Hey, I had an allergic reaction to Penicillin in my Amoxicillin antibiotic I was taking to help with a puss pocket in my throat. I have been taking the medicine for about a week. I woke up Yesterday morning for school and had a bad rash over all my upper body. My family doctor took me off the Amoxicillin and put me on a new antibiotic and told me to take Benadryl to make the rash go away but it just seems to be getting worse. It went from just redness to looking like maybe little mosquito bites. I'm still in high school and dont want to be made fun of. I'm looking for help to clear this rash quickly.