Hi bypass lady
it does get better - this is the toughest patch by a country mile!
The stitch is likely to be the gas they pump 8nto your abdominal cavity to separate your organs so they can do the surgery more easily. It does get absorbed, but it helps if you are up and about walking around, moving that gas.
Are you drinking water? Way more important than food just now. Your best mantra just now - sip sip sip, walk walk walk.
And dont forget, a general anaesthetic messes with your emotions. It will pass! And then the good stuff happens! Just stick to your programme...