Aaah, the feeling of coming round in Recovery, realising you're still alive and patting yourself down to find there's no stoma
I had a resection of the large intestine with a 17cm x 8cm (large can of Guinness) tumour taken out on March 1st last year. That was by keyhole surgery and I was home within 3 days on the 'enhaced recovery programme', which translates as 'we get the bed back quicker'.
I was gently on the turbo trainer after 10 days and I got my first road ride in after 6 weeks and 4 days. That was a very flat 50k. Then a few more flat rides before chemo kicked in.
Everyone's different, so the best advice is really to listen incredibly intently to your body, and to the medical professionals a bit too. I took the appearance of my scars on the outside as a decent analogue for the healing process on the inside, as the last thing you want to do is pop a stitch anywhere.
Wishing you a speedy and safe recovery!