What can you tell me about csections?

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I just found out I have to have one scheduled for Thursday because baby is breech. I’ve been prepping for a vaginal birth this whole time and now that it’s sunk in that I will be having a csection I realized I know nothing about them! Any tips or words of advice from mamas who have been through it before? Do they give you any type of medication for the pain afterwards/how does that interfere with breastfeeding?