I would suggest fibre supplements.
If diarrhea happens suddenly, isn't consistent and you have no other symptoms before or afterward..it could be something you ingested through food or the food itself if it was taken in excess or out of the ordinary from what you might eat normally.
A stressful situation could have one's colon processing a bit quickly.
If it becomes consistent,it could be IBS or you're in a flare.
If you had constipation for a period of time before the diarrhea, it's probably a flare.
Lots of reasons....but if you're not on meds, you might consider them.
Regardless of the reason....fibre supplements can help bowel health and peristalsis by increasing the proper food for good gut flora probiotics as well as exercising the colon. The up side...it will help bulk the stool which is a good result if one is constipated or having loose or diarrhea stools.
There are many fibre source supplements...the trick is to find one that fits your needs or suits your body's reaction to it.
*Heather* Status..Asacol (3 twice daily); flaring since Dec 22, tapered every 2nd nite (Jan 3)
~diagnosed January 1989 UC (proctosigmoiditis)
~Bentylol (dicyclomine) 20mg as needed
~Probiotics....(Natural Factors Protec, Primadophilus Reuteri Pearls, Natural Factors Ultimate).... @ bedtime
~various digestive enzymes as needed
~Ranitidine (reflux); Effexor XR 75mg(depression); Pulmicort/Airomir (asthma)
~URSO for PSC (or PBC) 500mg X 2 daily (LFTs back to NORMAL!!)
My doc's logic.. "TREAT (FROM)BOTH ENDS" worth it !!!