Waking up feeling nausea,dizzy,exhausted,agitate… can't sleep at night. Why am I feeling so ill.?

Lately I've been feeling very ill and day by day it's been getting worst. I haven't took any medicine for it yet I was to afraid I'll throw it back up. I've been to tired to get anything done. I can't sleep during the night I sleep mostly during the day between the hours of 1:30 p.m and 9:00 p.m. I am under alot of stress right now and sometimes it feels like I'm going to enither have a nerves break down or an anxiety attack. I get irritated very easily now. I'm not on any kind of medication except for my nasal spray. I don't usually get sick offend so this is highly unnormal for me.