I have a colonoscopy appointment tomorrow. i followed the instructions of taking 4 pills of dulcolax and drinking muralax, yet i have barely gone to the bathroom. is it okay?

Instruction will say: The ordering doctor or the performing facility's staff will give instructions that say what the time frame is for pooping out clear watery liquid after drinking the clean-out medication. The goal is to poop out everything and then some clear liquid. Otherwise the camera will likely run up against a glob of poop... and you can imagine how hard it is to take a picture when up against a glob of poop.