I've now decided to stop the anti biotics I think I'm allergic, I've come out in a rash and I feel a strong need to vomit but can't! My stomach also feels like it's burning and churning, is this normal? I'm really worried I'm trying to get the vomit out but I'm just gagging nothing is coming out but feels like it wants to! Sorry if this sounds irrational, I know you are not supposed to drink alcohol on these but I didn't realise mouthwash was out of bounds I thought it was just drink! I took listerine last night as normal and I'm worried this has now caused this reaction! Sorry I'm just really panicking