Flush--how sick could I get?

My liver is begging for a flush, but I have plans every day and night for weeks. I MIGHT be able to clear this Saturday evening, but I have to be reasonably functional on Sunday.

How debilitating can this Liver Flush be? I know it's hard to predict, but is there a good chance I'd be feeling OK by noon? I'm a first-timer, and planning on doing the clark recipe and schedule. I've been taking P&B shakes for 10 days and have had excellent movement. BTW, I won't be too far from the toilet!

Thanks,
Emily Tweet