My repeat csection is scheduled for Tuesday thr 25th at 37 weeks for health issues both me and baby are having.

I've known this whole pregnancy I was having a csection, it's what I wanted.

But now that I'm a few days away I'm terrified of dying. For some reason this popped in my head and I cant get it out. I talked to my doctor, she was comforting of course but this anxiety is unreal. I barely sleep, I started Zoloft, I'm on day 3 so it's not doing much yet. I'm not scared of the surgery, I just feel like something is going to go wrong and I'm not going to make it. Has anyone been through this? I just need some comfort, I'm honestly terrified and dont know why.