What Causes Odorless White Rectal Discharge And Flatulence After Eating?

I have a condition that is so embarrassing, after I eat I get flatulence,(gas) with a oderless discharge, the discharge is like a slim, please help me, I can t go out to dinner without protection, I can t wear white. It is absolutely aweful. I had a colonoscopy done but was fine there was nothing to be seen. So now what,please I need your advice. Also the flatulence is like an explosion.