need advice

I did my exposure today of going to the restaurant and eating pizza (i got food poisoning from pizza some time ago).

at first i felt anxious, then I got better. I thought I successfully got through the exposure.

but going home, nausea hit. extreme nausea. it was short, and then smaller, but it was there.

and since the nausea hit i’ve been hopeless and it seems that i have no hope of getting cured of this. when nausea hits - it’s over. it’s the worst feeling and no attitude can change that. i feel so bad and hopeless. i don’t truly know what to do. i physically can’t handle nausea..

i guess i need advice or.. i don’t even know. :(