hi emmzie and welcome!
could be adhesions/scar tissue forming or your system is slowing down a bit. what do you usually eat? try to keep a soft-liquid diet for a while, no fiberous foods, seeds, grains, beans, fresh fruits and vegies. eat less breads, potatoes, rice, pasta etc. i know... not much left to eat, but it sounds like the obstruction is not completely cleared and keeping this diet for few days can help.
if after a few days you start to feel better, keep on with the diet anyway and gradually start to add more foods - if anything triggers the pain again, you'd know this food is not for you. me, for instance, dairy really constipates me (among other things), so although dairy is considered as something to add to a soft-liquid diet, if it normally slows you down, stay away from it for now.
good luck and hope you feel better soon.
06/05/2007 - STARR procedure
colonic inertia w/pelvic floor dysfunction
08/16/2009 - total colectomy w/ileorectal anastomosis
07/08/2010 - loop ileostomy