Please respond

So I have a condition where I have major anxiety attacks because my brain jumps to the worst possible outcome of a situation and then obsessively thinks about this out come it's called Catostrophic Thinking. I had sex with out a condom and he did NOT ejaculate inside me and I have been on the pill for years now. But I just woke up out of a dead sleep and started freaking out about pregnancy. My mind searches for this almost every time and it makes me physically sick with fear and panic. Is there anyone out there who can lend me some support and good vibes???