Iam no Doctor but it sounds like you have some kind of parasite or worm.They have a show that comes on concerning persons that have these and your symptons sure sound exactly like the ones...
MOVIPREP..... I ALSO WAS TOLD TO USE MOVIPREP BUT TO USE LUKEWARM WATER OR GATORADE NO PURPLE OR RED OR USE CRYSTAL LIGHT ICED TEA MIX TO DISSOLVE.fIRST TIME USING IT I USED GATORADE MADE IT TASTE...