When I got out of the hospital I didn't have a BM for a few days either, although I have a colostomy which is going to be reversed.
But everything comes out the same anyways right lol? But yeah if you aren't having any pain or discomfort more than likely there isn't a blockage or anything.
I know when i had a blockage I'd go 3-4 days w/o a BM, and then have horrible D.
But yeah it's definately something you might want to check out.
But I'm sure everything is fine
:) Brandon