Update- I am terrified of vomiting

So throughout my whole first trimester, i was really nauseous but i never threw up until now that I am 16 weeks. I have a horrible fear of vomiting and i get anxiety when i'm nauseated. Well today was the first time in YEARS i have thrown up and now my stomach is burning and hurting like hell. A part of me thinks it could be something I ate rather than the pregnancy itself.

Anyone else feel burning in their stomach before and after vomiting? Its not too painful, just really annoying.

Update: It turned out to be food poisoning. I ate a PB&J that day before and the jelly went bad which is why i got sick spon after I ate it.