Back surgery and pregnancy

I had back surgery when I was 18. To be more specific, laminectomy and discectomy of my L4-5 and L5s-1. I'm now almost 29, happily married and we are mentally, emotionally and financially ready for children, however I have dealt with chronic pain for the last 3 yrs. Has any one had back surgery and then a healthy pregnancy without bed rest? Most of my drs seem optimistic for the most part however I feel like they are just trying to stay positive because they can't necessarily tell me I "can't safely carry" :(