Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.F.
AS you describe your wife has normal delevery on 27-2 13, got operated tubectomy open surgery on 28th.till now she has stomach pain, pain on urination, and does not want to move from bed. Pain in the stitches area.
It is strongly suggestive that she has ascending urinary tract infection
and pelvic inflamation, after the delevery.
I advise you to consult a urologist
or gynaecologist for diagnosis and treatment. You may have to go for M.R.I. along with other routine tests for conformation.
In the mean time you can use anti spasmodics for temporary relief.
Wishing for a quick recovery.