Sick or tdap reaction

Not sure if I'm having a reaction to the tdap vaccine I got Friday or if I ate something off putting or getting sick or what but this evening I started choking on acidy spit up but did throw up, took some tums and went on about my business. A bit ago I just woke myself up choking on it again but a lot worse! Scared the crap out of me and the hubs. Was having a hard time breathing and the shakes, but still couldn't vomit. The acid taste is still there and all down through my through and stuff. It's definitely not heartburn, but idk what's going on. 😷😷😷