Stomach problems causing anxiety

This is super embarrassing.. I have IBS, even with the right diet I urgently have to go to the bathroom with very little warning. Since I was young I've had anxiety about this, I'm afraid that I will be out somewhere and I won't make it to a bathroom in time or there just won't be a bathroom, or even if there is if I have to go multiple times people will notice. It gives me anxiety every time I go anywhere. Any advice on how to handle this would be appreciated.