C-section advice and questions

A

So I was told ill be having a c-section Thursday due to the baby not dropping doctor said my pelvis is probably to small for her to fit. As the time gets closer I am terrified this is my first so I have no clue what to expect if anyone thats had a c-section could give me a little insight of how the process went, do you feel anything while it's happening? How was the healing for you? Also any other advice you'd like to give