PGP, SPD and/or gestational sciatica?

Hey everyone! I’m 29 weeks pregnant with my second child and sometimes I am in so much pain I can’t even get out of bed. My midwife kind of dismissed it as sciatica and says she has it too but I don’t think she’s understanding the extent of pain I’m in. I’m getting super sharp pains in both sides of my bum and shooting pains down my leg and up my spine. When I try to walk there’s a audible clicking in my lower spine and hips. Some days my legs will give out or I just straight up can’t stand. I have an appointment with a chiropractor this upcoming Thursday but I wanted to know if anyone has had this and if it went away after birth?