Nina- i was HUGE too. it sucks hey? I put on nearly 30kg's. I ate a very healthy balanced diet, walked when i could but still stacked on the kilos. I put on 6kg's before i even knew i was UTD!
I lost 15 in the first week after she was born, and have lost another 5, so only have 10 to go!
Pre-preg i had never had any issues with my weight. So i found it really hard to cope with.

Don't worry it's only temporary, try not to worry about it too much, enjoy your new curves, they won't be around for ever.