Hi Sarah,
I wrote a post to you earlier today but alas it has disappeared--not sure where it went haha.
Anyway, I was fused as a teen from L4-S1 in 1984 (uninstrumented). I delivered both my kids (ages 11 and 8) by c-section, both with spinals. The first spinal went right in and worked perfectly. The second time the anesthesiologist had trouble and told me she was going up one level. Then it worked fine. I had no effects at all to my back. I had a lumbar scoliosis at the time of around 30-35 degrees. The area they go in is numbed before they start so you do not feel anything beyond the initial injection of local anesthetic.
It seems like you should do well with a spinal because it would be below your fusion. I felt a lot of pulling and tugging during the deliveries but it did not last long. I was wonderful to be able to hear my babies' first cries and see them right away. If your anesthesiologist thinks it will work for you, I would encourage you to try.
Congratulations on your coming baby, and please let us know how things go. When is the happy day?
Gayle, age 50
Oct 2010 fusion T8-sacrum w/ pelvic fixation
Feb 2012 lumbar revision for broken rods @ L2-3-4
Sept 2015 major lumbar A/P revision for broken rods @ L5-S1
mom of Leah, 15 y/o, Diagnosed '08 with 26* T JIS (age 6)
2010 VBS Dr Luhmann Shriners St Louis
2017 curves stable/skeletely mature
also mom of Torrey, 12 y/o son, 16* T, stable