Diarrhea Every Day - worried

Posted By Rich on October 06, 1998 at 16:05:11:







I'm a 36 year old male in good health.
About a month ago I suddenly had an attack of diarrhea in the evening.
It was very watery with some ochre-colored bits in it and it burned my anus.  
It almost ended up in my pants as it came with no cramping - I thought it
was gas.  Since then, every BM has been either diarrhea or very loose,
malformed ( ragged, small ), yellowish stools.  There is no pain, no cramping,
my appetite is unchanged, no weight loss, no visible blood.  Attacks
never happen at night; instead they tend to happen within 2 hours
of eating a meal especially in the morning.
What I eat has no effect.
I went to my GP who put me on Flagyl and Hyoscyamine.  He says my
"belly is very noisy" and he's right: when I don't take the Hyoscyamine
I can feel my insides churning.  The Flagyl has not helped at all after 5 days
but Hyoscyamine reduces frequency of attacks.
GP now wants me to stop the Flagyl and see a Gastroenterologist and I'm scared I have
something like Colon Cancer.  I don't smoke or drink and there's
no history of Colon Cancer in the family. I'd like as many
opinions as I can get...