Ha Ha, you will be expecting miricles now!
My physio showed me how to do them properly. She picked the ones that are better for pregnant women.
I've tried to look on the internet, but can't find many sites that show for pregnancy?
Basically, it is about keeping your pelvic floor muscles / lower stomach held in, whilst doing controled slow stretch type exercises. Deep breathing whilst doing this, and keeping balance to ensure your posture staight.
one exercise is kneeling on all fours (doing the above). keeping back straight. lift your right arm out straight to the front, and your left leg out sraight behind. then with opposite sides. do about 10 to start with. if your posture is right, it will build the deep core muscles.
The plank is another one. start on all fours again, but keeping you arms holding you up, level your legs out straight, keeping your back straight again, using the same muscles and breathing. try incresing the time that you hold yourself in the position.
I only do about 15 repetitions, on about 6/7 exercises. I do this in the morning and before I go to bed, whilst watching the tele.
(Be carefull, as ligaments in your stomach may be sore, due to growing bump).
If you are interested, I reckon going to one or two classes to get some ideas, and check your doing it right should get you started. I was doing it wrong at first, and it had no effect. Been doing it for about 6 wks now.