Don't bother buying it – Prenatal Workout - 20 Minute Exercises for Pregnancy Review

The exercises never change, you are basically doing the same ones through all 3 trimesters with maybe one or 2 new exercises thrown in there. You're better off doing the one you can for free and then going for a brisk walk outside.
Review by Yungmunybarb on Prenatal Workout - 20 Minute Exercises for Pregnancy.