I'm with you on the whole losing baby weight. I was still trying to get the extra skin on my belly to flatten/tighten back up when I found out I was pregnant again. Sigh
But some of the things that I did that worked well: There are DVDs that I have two of that are called 10 minute solutions....One is pilates. It's actually a prenatal pilates but I still use it because you still get a good work out with it, and I have a kick boxing one.
They are broken down into 5 different sessions, 10 minutes each. So You know you have at least 10 minutes to work out. You can do all 5 or you can pick and choose. There's a bunch of different ones you can get but I like them.
I also walked my son outside when I could, while the weather was nice, but it's not so nice now so I have a workout DVD from Leslie Sansone Walk at home. You can walk 1-5 miles, all in the comfort of your own home. It's a cardio walk so it's not all straight walking. Again, I like it, and it is something that has helped me to get back on track.
My sister (who is also still trying to lose baby weight) signed up for www.myfitnesspal.com.
It's free. You put in your body weight and your goal weight and then you keep track of what you eat (it's an eye opener. I realized how much of an unhealthy eater I am) and what you exercise-if you do. You also can put in how much you want to exercise a week. After each day it will calculate what you ate and/or exercise and tell you something like: If you ate like this everyday in five weeks you'll way.....
My sister and I support each other and it has helped.
With the walk at home. It starts slow, it's an easy pace. I started out with the one mile. Once I was good with that and felt like I could do more, I added the 2nd mile and later the third. I have yet to go beyond that. But it's something that I like, so it's worth a try.
http://www.the10minutesolution.com/
http://www.walkathome.com/