I've had one surgery on l4/l5 with fusion and bak. I, for one, would never let another surgeon touch my body. Just one surgery and the post op pain was more than I could stand.

my surgeon was a nerd and laughed when I returned because my abdomen had swelled to about 8 months pregnant! Needless to say, I have never gone back to him. Pain - I finally went to pain management elsewhere and ended up getting two separate nerve blocks. Worked fantastic wonders.
Now, 6 years later, and another mri later, I have two more bulging discs - one above and one below the fusion. Go figure. It's time to change jobs.
I was just referred for physical therapy. Got there and was told to pretty much stretch the "ham strings". Yeh, right. I have never been overweight and am very active. Now i'm lucky to be able to do one slow dance with my husband without pain in the lower back and both legs.
Surgery? No, not ever again. I didn't have a choice the first time. Spinal column too narrow and disc was essentially dissentegrated.
Listen to your body. If you have a gut feeling that some doc or therapist is telling you something you already know, don't be foolish and keep going to them and paying them for lip service. Just think about what hurts and what you can do to alleviate what ever you can of it. One day at a time. The hard part is sleeping. Rest. Keep walking but watch the bending and lifting.
I don't know about you but my surgery left me traumatized forever.