Every single time I eat, I feel really sick, and it lasts all throughout the day.

I am going through a happy time in my life right now so I wouldn't say I'm stressed, obviously I'm constantly anxious (my anxiety is over my phobia of being sick) but I haven't had this before.. I still get hungry, but I physically feel so sick, no matter what time of day it is, no matter what I'm doing.

however, as soon as I get up in the morning I feel fine!! it's all fine until I eat.

what is the reason for this?!!? :'(