Drainage and pain after sphincterotomy

[vik78]

I had sphincterotomy done week and half ago. I am experiencing drainage, thick mucuos fluid comes out on/off. my pain during and after bowel movements has subsided. I talked to my surgeon and he is saying that is the area where incision was made. Is this level of pain normal? am i developing/have developed infection/absecess. how can i tell if it is just post surgical discomfort or absecess?

Thanks so much