There is a great old thread here called "It's M Day" or something like that. I'm sure that Rob will help you if you can't find it. There was a lot of great info shared there.
I used to take it - I also felt terrible for a day or two after. It really helped with my skin issues, but man, did I feel awful!
Are you taking the pills? My stomach wouldn't accept them, so I had to go to the injections. That helps quite a bit.