Leroy down with gastric flu

Preparing to sleep at 11pm when Leroy woke up crying saying his tummy is painful. His hands is quite cold although the body is sweating. Bad feeling that he is down with gastric flu like what Lervin had 2 weeks ago. Quite sure he got it after he vomitted twice and luckily not on the bed. Fed him medicine and pat him to sleep but he kept tossing and turning till he fell asleep. I didn't sleep the whole night. Each time he cough, I woke up to check on him. Applied half day leave and bring the kids to mum's place before going for work... Before I leave mum's place, Leroy looks very unwell and don't even want to play or talk. But when I call him after I reach office, he still can laugh, play and shout. -.-