Don't worry
First thing to tell you your body accepted the suture..as it is same one that is used in other healed site right??
So there are some local factors that made healing of problematic one now.
One most important thing is are u a Diabetic???
If yes..your blood
sugar levels decides your wound healing
If there are local irritants like uncomfortable cloths or dressing..correct it
Have healthy food..Sour fruits like oranges,Take protein like egg milk
Next Steps
Get your dressing done by Some health care Professional who can assess stage of wound and add appropriate dressing material
Health Tips
Have Vit C Tablets twice daily(Chewable)
If There is swelling...Take Tab.Chymoral forte 75mg po 20min before food..
Take this for 1 week and see for results