Hello Nina. I have 6 kids, the first 2 were pre-back injury(16, and 14)
Then I was hit by a drunk driver about 8 years ago, ruptured L4-L5, I also have stenosis. My 5 yr old did not seem to be to bad and with my 21 month old my bad hurt quite a bit but the MRI after she was born showed she didn't do much more damage. However my 9 month old twins did, but I have big babies the smallest twin was 7lb 5oz. and the last two pregnacies I put on alot of weight.(They were back to back) Plus I am in my mid 30's. So I think you should have no problem, but prepare!!!!! Build your torso musles up and get good shoes.