Sorry to hear about your surgery.
The pain may be due to inflammation or infection at the site of stitches.
Is there any swelling, redness & tenderness at the region?
Is there any discharge from the region?
Any fever or feverish feeling?
If any of these is present, consult your surgeon immediately.
Apply Calendula cream (Homoeo) to the region 3 times a day.
Take AT 200 tablets 4 times a day for a week