I usually do Davina's DVDs and they're great. I'm now 12 wks pg (2nd baby) and feel I might be able to do exercise again without vomming now (!!) but Davina's pregnancy DVD isn't very tough at all.
It will be fine by the third tri, I know! But for now, should I buy another preg DVD, and if so which one? Or should I continue doing Davina's non preg ones, with common sense on the jumping and abs work?