Question about colostrum

Hey ladies! FTM here and I have a weird question. I’m supposed to have a C-section on 8/20. My nipples haven’t been leaking yet which I hear is normal. But I guess my question is will I have colostrum by the time my baby arrives? I know baby’s first feed usually happens in that first hour so what if my colostrum hasn’t come in by then? I know the actual milk doesn’t come in for days. Or is colostrum actually hanging out in there already and the sucking will stimulate it to come out?