After sigmoid colectomy surgery pains

I'm in my 6th week post op. Basically doing good. Making sure I eat right, exercise  (moderately ), drink lots of water, juice & 1 Gatorade a day.   Anybody else out there in the same position?  I had open cut so I understand the healing process will be longer. The incision is healed on the outside but not the inside. How long will I have to take pain killers  (minimal ) before the inside hurts.