Yes, it sounds like you experienced a partial obstruction, I had several in the first year and none since. The best treatment is what you did, stop eating, drink plenty of fluids and walk, walk, walk. Once the obstruction has passed you can go back to eating again, you don't need to wait. This is very very normal, try not to get to anxious about it. The only time you should get concerned is if you begin vomiting. That would be an indication of a full obstruction and you would need to get to a hospital. I have never had one so can't comment but I do know the difference. Partial obstructions should become a thing of the past once you have more recovery time under your belt, so to speak.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free