Pre op for c section tomorrow!

Im so so so nervous although this will be my 3rd section! I was in hospital last nighy being monitored for early labour but got sent home as i wasnt. Got my pre op tomorrow morning and my c section Thursday morning, im so nervous and on edge! Its not just the surgery its having a newborn again! I feel guilty for my 2 girls for some reason. I felt this way with my second child and developed bad ppd 😭 i am on antidepressants but missed the last 2 days as i forgot to take them with me! I cant calm myself down! I didnt think i would be nervous but i am!!