i have a phobia of throwing up

I hate throwing up so bad i swear i rather do diarrhea instead off throwing up... Ughhhhh i hate being a human being. is there anything i can do to prevent throwing up? I just been the type of person that throws up, with anxiety , Nervoues, my stomache is small so i get full fast and tend to gag.. i have acid reflux . So yeah my body isnt good at all , i wish i was that person who never throws up in their life..