It sounds like you had a partial blockage (maybe a piece of carrot got stuck), but it unblocked quickly, which was the sudden flow you felt. Just try to chew veggies really well and drink plenty of fluids, and you should be fine. No worries! :)
Dx'd Crohn's in '99 at 28. Proctocolectomy and ileostomy in '06.
Disease-free, medicine-free, and very thankful to be healthy again.