L.,
Please call your doctor. It is normal to still have some discomfort at this time but your discomfort doesn't sound normal. It may be an indication that you have developed an infection on the incision site. It may also be that you have overdone it once or twice and it is more painful because of this. It is best to call your doctor to be sure.
With both of my previous c-sections, I was only on prescription pain medication for about a week. During that week, I was able to transition from percocet to ibuprofen without a problem. Everyone is different, though, and your pain may be normal for you but call your doctor to be safe.
One more piece of advice which I received from my aunt after she had her c-section. Stay away from vacuuming and sweeping. They tell you not to in the hospital but she figured what could it hurt and found herself in intense pain afterwards. It's amazing how many muscles in that area that you use just to vacuum a room.
Good luck.