Talk to Pediatrician on Vomit And Loose Motion

My child did loose motion in following frequency Day 1 .... 4 to 5 times Day 2.... 3 times Day 3.... 3 times At day 2 i gave her rice water and consistency of loose motion got better with gap of 9 hours. Today at evening he played outside and was covered in dust i washed his hands after 5 mintus. At 7 o clock he ate ghur walay rice in good quantity and afterwards a packet of cheetos. At 8:30 he went to sleep after having a bottle pf milk. At 12:30 he vomitted thrice after 5,5 mintues. And now is sleeping. Please guide me what should i do. I will visit doc in morning .meanwhile please guide about food and liquid intake. He ia not taking water nor milk.