I finished it right before I got pregnant too and it was great. I was in pretty good shape to begin with, but it definitely helped me get more tone and I even lost a couple lbs...which was great since I knew soon I'd be putting on quite a few (due to being pg)! I'm hoping to do it again as soon as I'm cleared to work out after having this baby. I can't afford all new clothes so I better fit in my pre-pg clothes quick! lol
Good luck! I thought it was more tough mentally than physically (just to get yourself to do it for 90 days in a row), but worth it. FYI - I didn't really follow the meal plan, but tend to eat pretty healthy anyway. I just stuck with that and it worked.