Partial obstructions can be very difficult to see with imaging studies. Obviously it was real.
For the current problem, are you able to drink water? Are you well-hydrated, with light-colored urine? Are you able to hold down liquids with some nutrition, like grape juice? Are you vomiting? Are you still producing stool and/or gas?
A partial obstruction will usually clear on its own, but it’s important to stay hydrated, even if it takes an IV. A complete obstruction is a big deal.