Hi Marisol,
First of all congratulations on your great news! My little boy, Daniel, is now 5 weeks old (I can't believe where the time has gone already!!). Personally, I carried on doing Cathe cardio and strength videos pretty much until a few weeks before I gave birth (the only reason I stopped was due to picking up a chest & throat infection just prior to having him). Anyway, I modified the impact from about 5-6 months onwards, as it just didn't feel right for me to jump around too much at that point. However, with the extra pregnancy weight, even doing the workouts low-impact still gave me a great workout! I used the CTX series alot, particularly towards the end, and also Rhythmic Step and some of Cathe's earlier cardio workouts (Step Fit/Power Max/Step Heat, etc) and just modified to suit me. For strength work, I did Power Hour twice a week for about 8 weeks and then switched to the CTX strength work, then back to Power Hour, etc. Within 2 weeks of giving birth I had not only lost my pregnancy weight, but was actually lighter than before I got pregnant. I have to credit this solely to keeping up my workouts, and not just any workouts, but particularly Cathe workouts (it certainly wasn't because I was eating carefully - I think I ate for England whilst pregnant!!).
Provided you are fit and healthy, listen to your body, drink plenty of water, modify to suit you and rest when you need to, Cathe's workouts are still very "do-able" whilst pregnant.
Hope this helps - and congrats again!!
Kaz