Similar happened to me - I spent 4 weeks. in Hospital after needing to move to Full surgery. I also had a stoma but it took a long time for my bowel to a) wake up and b) get back to any consistency. It's important to east very small - I literally started with half a nibble of a biscuit then moved onto soup, ice cream and very slowly built up. Being home allowed me to eat little and often which helped.  It still took a further week to 10 days to start seeing improvement.

I see your post was 14 days ago so hopefully things have improved - but speak to your colorectal team and take things slowly.