Day after Strep Throat with fever of 102.7, discovered red bumps on top of hands and along both sides of arms. Fairly itchy. What should I do?

Drug allergy? Presumably you were treated with an antibiotic. Sounds like you're having an allergic reaction to it. It's also problem your apparent strep throat is really a viral infection with rash. Contact the doctor treating you; most likely s/he will recommend you stop treatment and prescribe a different antibiotic.