Hi
You didn't mention how far you are out from surgery but it was a dicy situation for me and I had a bunch of blockages right after surgery but none in the 25 years since. Swelling and adhesions can sometimes take a while to settle down. My surgeon told me he never saw bowels swell up like mine did after being cut. I guess it didn't like being cut.
Just be careful for a while and if need be give up the vegetarian thing for a while and eat some healthy meats to get protein in your body, last thing you need is anemia and/or weight loss.
You mentioned spiralized Zucchini and just want to mention to everyone last weekend my local Trader Joe's was sampling their new spiralized carrots and they are fantastic! You can find them in the frozen foods vegetables section. I sautéed them with some light butter and TJ's crushed frozen garlic cubes and they were really good! Ironically raw carrots did cause one of my blockages 25 years ago.
i recently celebrated my 25th anniversary with the J Pouch and it's been a great adventure including the said blockages at the beginning of that 25 years but I would not change anything.
Good luck and hopefully you just are in a rough postsurgical patch you will move on from like I did!