idk what is happening

so tuesday night i was asleep i kept waking up cause i thought something was going to happen. i didn't get much sleep. then wednesday around 1 i took a nap again i kept waking up because i thought something was wrong. i'm normally not like this. i normally fall asleep easily and stay asleep. but lately i just feel like something is wrong and haven't been able to stay asleep. oh then i was snacking all day yesterday cause i was hungry for a meal, but i was a little hungry. so i ate a few cookies, chips, and drank some milk. well after i eat i feel sick. i'm not too sure what's happening. i've never had this happen to me before. i've always been like a bird while eating. i've never ate much. and i've never gotten sick after i've eaten.