Hi , well it sounds like a good time to start! Although I promise you it won't be quick and seeing as how you are pretty much already back to your prepregnancy weight (well done by the way

) you might have a bit of real stubborn-type flab that you may not be able to totally get rid of.
I have two kids the last one is already 2 and a half, my how time flies, and I only really got serious about it about one year ago. You did very good on not gaining any weight! Seriously that is a very hard thing to keep under control when you are pregnant and if you were like me...ravenous all the time lol.
I read you liked running and dancing which are both things I was going to suggest you do! Just get into dancing again, dance around the baby they love it and it makes mine laugh at me
Also you should start a journal entry and let us know what foods you are eating that really makes the big difference on those last few pounds. People here know alot more than me on the weight loss itself and diet recommendations, I just know some things about exercise .
When I first started losing weight I ran during my lunch break every other day started at a run/walk and did one mile and worked my way until I ran the whole mile, then increased it to a run/walk 2 mile and then ran 2 miles and on and on...you get my drift...and with that I also danced through the entire Veruca Salt CD every night with my kids.
Also try limiting your carbs in your last meal of the day that makes a big difference as well.
Drink alot of water esp. during summer, and try to avoid sugar.
But like a friend said, a little indulgence here and there can prevent a severe overindulgence ! which I tend to have a problem with .
Good luck to you !