I'm a first timer but I'm so there for the healthy pregnancy thing!

I gain weight really really easily (for no apparent reason, doctors have been looking for years!), and am already nearly 20kgs over my healthy weight for my height! I was about 73kg when I fell pg, and now I'm just over 68kg. But being 5'2, my ideal healthy weight is around 50-55kgs. I've actually managed to lose weight since being pg, which I'm told while expecting twins is just phenomenal! But OB is putting it down to excessive nausea putting me off my food. I'm hoping that the babies are using my extra fat stores up now while I'm having difficulty eating and so by the time they start to really get a grow on, the part of my weight thats just me will be a bit more manageable! Sigh, its probably wishful thinking though!

I can't afford a gym membership or a PT but I do have my Wii fit!