Yes, I'm 7 months pregnant and I have at least 3 more months before I can start exercising full-time. Right now I'm alternating between Zumba (low impact) and swimming which is helping my weight maintenance. I haven't gained any weight. I actually started out at 196 and I'm now 185.5 as of February 11. Healthy eating, plenty of rest and low impact exercise is definitely doing wonders. My blood pressure is 117/20.

By comparison I went from 170 lbs to 209 lbs with my last baby which put me at the heaviest I've ever been.
I lost the weight over a period of 18 months with healthy eating and exercise 5-6 days a week. I got down to 150 lbs all by myself so I know I can do it. Over the last two years the types of jobs I've held have greatly influenced the see-sawing of my weight. I really had to force myself to exercise to maintain my weight and eventually it got so bad that I was pushing 200 lbs right before I got pregnant.
I decided that I didn't want to gain 30, 40, 50 lbs all over again.
Losing that weight at this age is a lot harder than it was at 24. My metabolism has changed and it's pretty obvious which scares me.
But I've got everything laid out for my exercise plan and I'm also doing a transition diet for the first eight weeks of my workout. It's not really a diet, more like a refinement of eating. It will let me learn the relationship I have with food all over again.
I can't really say that I eat whatever I want because I don't. I do weigh everything I eat based on a ballpark figure of calories. I know that my regular intake is between 1200-1500 calories a day and being pregnant allows me to eat 300 extra calories a day. If you break that down, it's not a lot of food and I try to stick to that philosophy.
I drink soda once a week but this is in an effort to control my migraines. I'm on medication for them now but sometimes a little bit of caffeine fixes me right up. I don't make it a habit however. I really like lemon water and if I drink something with bubbles it's San Pellegrino, Perrier, or Izze.
I do have my vices: I'm from the South so I love my Sweet Tea which I'm proud to say I only drink at special occasions now but man, I have my issues with my BUFFALO WINGS. But I plan on overcoming that obstacle because being healthy is more important than giving into every craving I have.
So for now I'm taking it one day at a time. It's all I can do until my bundle of joy arrives.