Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.Forum.
You had pain of left side of your lower back, it shifted to left leg, then the low back pain
subsided and left lower abdominal pain
The distribution of pain on the left lower back and to the leg suggest infection of the urinary tract
, or a stone in the urinary system
There is also a possibility of arthritic pain of hip joint.In that case pain is increased on moving the joint, like walking , etc.
If it is not relieved with the surgeons treatment, you can consult a orthopedic surgeon. He will get the M.R.I. of the hip and diagnise the condition.
Wishing for a quick and complete recovery.