terrible foot pain after D&C 3 months after spine surgery

I was healing fairly well from Lumbar Decompression surgery in August but continued to have some left foot pain. 3 months later had a needed D&C and my left foot pain has returned with a vengeance. I’m no longer able to stand or walk comfortably some days like my pain prior to surgery. I will have steroid injection at L5 S1 Dec. 19. I’m very worried about my pain level increasing after D&C. I used to walk or ride my bike daily before my ruptured disc even Jan. 17. Been in pain all year. Very discouraged tonight. Any supportive thoughts welcome!