I'm assuming it's from healing and he nerves and such healing back up, but I wanna hear someone else tell me that lol.

Below my large incision, beside the belly button area I am having "knife cutting pains" like someone is slicing me. I am 3 weeks post op. My large incision is already healed and bandage off. Is this from all the muscle they went through and nerves they severed to get my stomach out? Also the skin is numb-ish. I can feel sensation however not normal feeling.

I still have a burning/sharp pain with bending/twisting about 1" below my large incision on the left as well, and I'm also just over 3 weeks out. I think it's just the muscle wall healing.

I don't have that. And I didn't have that at 3 weeks post op. Maybe you need to get it checked just in case.

I had that for about a week. Even wound up in the ER (although if they had called the surgeon on call I would have been told it was fine). The inner sutures are dissolving and a little tiny bit of something is hanging in there, and between the healing and gravity (you're also losing fat in your abdomen), the suture is stretching and pulling. It should be gone within a few days.