Burning & Stinging Pain in Stomach/Upper Abdomen 3 Weeks Post-Cesarean section, normal?

It's been 3 peaceful weeks since my c-section delivery, there was no pain. I was limiting my movements and was trying to go back in doing the household chores. I am not feeling any pain at all, except that my wound has a discharge which I already let my OB know. Just recently, there is this burning pain, it is unbearable that I need to hold on to something just to get over the pain, on my stomach that goes around the area. I think it is on my upper abdomen, it bothers me because I am also having difficulties on *pooping*. Is anyone here undergoing or been through this? I need advice or someone who can understand me. Thanks!