Perhaps you ate food over the weekend that wasn't a good enough consistency and so it causes the stool so be more liquidy?! I'm only 9 weeks post surgery so I'm by no means an expert but I'm constantly trying to get the balance right with foods and trying to keep the consistency of my output as being thick rather than really watery.
24 y/o female from UK dx with UC (Proctitis) Jan 08. Never fully been in remission, resistant to nearly all meds tried. Also dx with IBS. Proctocolectomy+pouch surgery with temp loop ileostomy 9th April 11.
Currently taking daily:Tramadol, 20mg MSR (slow-release Morphine), 40mg Loperamide, Cyclizine, 60mg Seroxat (anti-anxiety), Multivitamins+Iron