Family is pressuring me to have another baby

My family really wants our son to have a sibling but I made it clear I was never having another baby again. I had a terrible pregnancy and was on bed rest through most of it. I ended up having a c-section and idk what was wrong with my anesthesia or whatever, but I felt them cut into me. I was so loopy I just said ouch and they ended up having to put me to sleep when they realized I could feel it. Then postpartum was awful. I had really bad postpartum depression and I guess my husband got the dad version of postpartum depression. Things were so bad he had to go inpatient for suicidal thoughts and I was left with our son until he was out and had to deal with everything alone. My birth, pregnancy, and postpartum where traumatizing and I never want to go through that again. I wish my family could just accept I'm not having anymore kids. Ever.