Suggest Remedies For Frequent Ear And Tonsil Infections

This year unlike years before, I have been more susceptible to ear infections. I pull the window in my car, stand near a fan for about 20 minutes, my ear starts to hurt, which then goes to my tonsils. I am 17 years old, under regulated stress because of my senior year. I am not in depression. I don’t smoke. My water intake is irregular from day to day. I get enough sleep everyday. (Min. 7 hours) I am a singer in training and I am really worried about my voice. What can I do?