A more detailed description about yourself and your pain would have been helpful to comment.
in the calf and foot, which is worsening should be a concern and you should get an evaluation done by your orthopedic surgeon. It may be due to nerve root compression
in your low back, mostly caused by a prolapsed disc in the lumbar spine
. It may also be due to a local cause in your calf like a blood clot in calf veins. or it may just be a muscle cramp. Treatment depends on the cause of the pain.
Good luck and get well soon.