I have IBS and anxiety triggers it 8/10 times! It started when I was 8. My parents would have to carry around pepto if we were on a long car ride because it would make me flip. Heart racing, hyperventilating, whole 9 yards. I’ve been on a few RX meds for it. However a lot of GI illnesses can also seem just like IBS and can be very harmful if not treated. I would see a GI dr to rule out anything else but maybe talk to your dr in the mean time for something to treat the symptoms. I know it sucks! There’s days where I’m so sick I can’t leave the house. Totally miserable!