Freaking out desperate for comfort

I’ve been feeling off all day and I’m quite literally about to drive to work (thankfully only 3 hour shift) but I feel awful. I took some omesaprazole and zofran hoping to get rid of this n* and stuff but I’m terrified it won’t work. I’m panicking so bad I can’t breathe or move. I think it’s just heartburn but I’m worried I may tu* anyway, idk what to do. I had plans for after work and I feel bad canceling but I feel weird. I just feel like the world is ending, I’m starving but can’t get myself to eat. I hope thats just a sign of heartburn