Pelvic girdle pain?

Anyone deal with this? I went to the doc today because I thought maybe it was a uti, but I was told I’m having separation pain. I’m literally limping because I’m in so much pain. I can’t go up and down stairs without crying. Driving is super painful as is getting in and out of the car and even bed. I’m only 21 weeks right now. The doc pretty much said that I’m screwed for the rest of the pregnancy. This is my 4th baby and they have all been 9+pounds. She said my body is just done with all this. I don’t know how I’m going to handle this until October with three other kids to care for. Did anyone end up needing a c section? I also have a hernia. I’m seriously a mess lol.