C section nerves

So I’m due July 11th but I will be having a c section on June 22nd due to being on love of, previous still birth, chronic hypertension and gestational diabetes.. just about everything lol.. anyway I can’t help but be so nervous and think things are just going to go bad. I had an emergency c section with my first baby (this is my second to make it this far) but this time I’m a total mess. I’ve read stories where the mother doesn’t make it and I just keep replaying them in my head. I’m driving myself crazy.