Talk to Pediatrician on Headache Problem

My son is almost 6 years has been complaining his headache since sometimes and it's becoming severe. whenever he has headache he feels vomits and thande paseene ana then stomach ache.i already have consult with his doctor he told us that there is ab me bht pareshan Hoon k aksar headache horha hai isse AJ mene school se off b leli hai waja hoskti b puri leta hai he sleeps in the afternoon after school, takes good diet,daily apple in the morning and school lunch me every healthy food every day please suggest me what to do...