Hi N. ~
I'm an OB nurse, trust me, it takes alot to do anything to your stitches :) and there are no stitches on your bowel. We always recommend Colace for constipation, you can get it over the counter pretty much anywhere, and generic form is fine. It doesn't make you go, but it pulls more water into the bowel to soften what's there. Also, lots of water and high-fiber foods, such as fruits and vegetables. Walking can help to increase the motion inside the bowel that moves everything along, but don't over-do it, maybe just up the street a few houses or so.
The stitches will take a few weeks to dissolve.
D. :)