Sounds awesome, i hope i get back to my normal size that easily after my kid's born

You're weightloss may have more to do with your new baby than your BC
ARe you really stressed out? are you depressed? are you eating right??
Or maybe is your kid keeping your on your feet all the time??
You might just need to take a little break. I wouldn't worry about it though right away... unless you keep losing weight like crazy... then you should see a doctor because it might be a whole different health reason
Take Care
Kim