My ds (5.5yrs) went to bed with headache and temp on Tuesday night, he was sick that night and about 3 time yesterday, and again last night, despite not eating since yesterday lunchtime. He was sick again this morning and it was green. His temp has gone down to 100.3 this morn, whereas it was 102+ yesterday. Should I phone doctor, or just give him another day of just water and see how it goes?