3 bee stings on july 26 and 3 more on july 30 are still red & itchy. using cortizone 10 cream and taking benadryl every 6 hours. should i see a doctor for stronger meds ?

You have not described any symptom beyond color change and itching. They are bothersome but do not suggest a life-threatening reaction. Other than offer a different antihistamine, I am not sure what a doc would do. Go if you wish.

A cool pack is often effective in reducing the swelling. Remove stingers if visible. Most often there's no risk of anaphylaxis. Another type of antihistamine may be effective and watch for signs of infection.