happygrrl
I was afraid to start cleansing for exactly the reasons you describe... i am on my first cleanse and you know, it's not too bad! The stuff coming out feels exactly like a regular bowel movement (so far). You have the option to just not look in the bowl and flush it down, but I could not resist a peek. Believe it or not it's quite interesting! Sometimes you don't see anything unless you poke around, due to the fact that the dead worms can be embedded in the 'poop'. It is stinky and funny colored, but as of yet I have not had an experience I would call 'unpleasant'.
So- I hope that helps ease your fears about worm action... once you get into it you will be fine. And you never know, you might just find yourself poking around in the bowl just to see what's there!
You really can do this! Good luck!