My Daughter Is 14. We Havebeen To The Docter Three

My daughter is 14. We havebeen to the docter three times the er four times. First started with a swolen lump like boil red and sore. Treated her for merser, had it checked by docter. It started getting rash took her back to docter gave her cream said it was staff. Her throat was soar they did strep culter was neg. Hospitol gave steiods for swelling didnt work has 4 days left on amoxcinen. Throat swolen looks yellowish, ears hurt, flem and snot way bad what can I do to help her feel better