Grace - I actually laughed out loud when I read your post, even though I realize that it's not that funny to you.
There are so many posts here that I can identify with, and yours is one of the best!
I was just talking to my sister yesterday about how I have never spent as much time in the bathroom as I have since I started FS. OK - let's stay graphic - both #1 and 2!!
But my tummy did settle down after a few days. I still have moments of "rumbly tumbly", but nothing like the first 2-3 days.
But, I figure that (A) - I'm eating way more fiber and (B) - If I'm going to lose it, it has to go somewhere. If it goes down the sewer, I can't get it back!
Don't worry - I think you'll get used to it. If not, I'd check with a dr. just in case. Good luck -