I had an L5-S1 fusion in 2016. Mine was an anterior and posterior fusion, so I had an incision in the lower abdominal area in addition to the ones on the back for the sextant.
The first month was awful sleep-wise, I would wake up every 1.5 hrs in excruciating pain and then experience more excruciating pain while trying to roll over to the other side. This got better when my incisions healed more and I could sleep on my back with a wedge pillow under my legs.
At first, walking was painful and so so slow. By 3 weeks post-op I was walking at least 3 miles/day, everyday until I went back to work at 12 weeks (mostly because I was bored and couldn’t really do much of anything else). I think that had a lot to do with my recovery going so well.
My neurosurgeon wasn’t thrilled about my wanting to ride still, but he told me to wait until I was done with PT to get back in the saddle. I did PT 2 or 3 times per week for 3-4 months (can’t remember specifics), so by the time all was said and done I was out of the saddle for about 7.5 months.
4 years later, I have ZERO regrets about the surgery. Any “bad” days I have now are much milder than my good days were pre-fusion and typically happen after I’m stubborn and try to lift something heavy-ish that I know I shouldn’t. I have occasional twinges in the SI area, but those don’t happen as long as I keep on top of staying active and stretching. I’m actually 32 weeks pregnant now and have had minimal back pain…very thankful for my titanium reinforcement!
Just hold in there and listen to everything your care team is telling you. It’s a serious surgery and the recovery just takes time. I didn’t feel “normal” until probably a good 6 months after surgery. Some of that was needing to rebuild muscle/stamina/let my nerves recover, some of it was needing to feel comfortable about using my body normally (especially after coming out of the back brace).