Don't stress it's okay!!
Like has been said he should defecate when he sheds.
I suppose every snake is different but most of our diamonds shed a week to 10 days after their eyes go cloudy.
If you are to worried you can put him in a luke warm bath and massage him.Usually just the swimming motion can get them going again.JMO
Oh, you could always change his paper/substrate that is when ours usually go !!
