My 7 year old daughter just flew with me from USA to Russia for a visit. It was her first time flying, we took 3 planes, one flight was 12 hrs and the other two between 1,5-2 hrs. She was complaining of earache while landing on the last flight. About 8-10 hrs after the last flught shestarted vomiting and comlaining of headache, no fever. She drinks a little water, does not eat. What can I do for her?