Hi welcome to Health care magic forum. It appears that it is due to sciatica
, nerve pain
. it has any connection with the pregnancy
depends upon whether you had planned cesarian or emergency operation, how long did you feel the labour pains etc.
If it is a planned c/s the underlying cause must be of orthopedic origin.
If it is an emergency c/s and there is more of labour pain it could be due to damge of the nerve by pressure.
Any how it is a must to consult an orthopedic surgeon, after taking the C.T.scan the doctor will decide the diagnosis and plan the treatment.
Besides i advise you to follow some diet recommendations as avoid taking potato, other tubers, tomato, cauliflower, coconut, eggg, chicken, seafoods etc as these foods are said to increase the pain.
Wishing for a quick recovery and thanks for calling.