Lower back pain 2 years after childbirth

Is this normal? I have horrible lower back pain even 2 years later. I have a high pain tolerance so I’ve just been dealing with it. But now I’m currently 6 weeks pregnant and the pains becoming worse.. I imagine it will get even worse when my pelvic bone expands making room for this child.

My question is, is this all normal?!? Will it last forever? Should I see a chiropractor?

I saw a chiropractor while pregnant with my last child to prepare me for unmedicated birth, but I only went 7 times bc the woman who adjusted me was like 90 lbs and would literally body slam me I feel just to adjust me. It was horrible and painful! ( I actually have thought to myself that maybe they caused this) but how would I know for sure!!

Any advice, thoughts, feedback?