I had my two children without any dramas at all. I have a long fusion and my doctor said that it actually helped me with the last little push of getting my sons into the word safely. Strength helped me, and my back is strong that is for sure. Can't help with the epidurals with child birth, as both mine were natural with hardly any pain medicine.
I was very lucky I think, but had a positive attitude right through and did not think at any stage that my back would interfere with things.
Best of luck to you and of course Congratulations.
Operated on in 1966, harrington rods inserted from T4 to L3, here in Australia. Fusion of the said vertebrae as well. Problems for the last 14 years with pain.
Something I feel deeply,"Life is like money,you can spend it anyway you wish, but can only spend it once.