Anna didn't want to take off her sling (with pig inside) at all when we showed her what it was for.
I ordered a Hotsling for me & Baby Girl and thought the one they made for kids was so cute, I ordered Anna one, too. She took to it right away, even before I could put mine on (with baby doll inside) to demonstrate. Of course I am having a hard time determining if mine fits properly since my belly is in the way, but I think it will be right. I hope that this will help me keep up with Anna while keeping Baby Girl close to me! I do have the Bjorn and the Ergo carriers for when Baby Girl is older but I liked the sling idea for its lack of bulk and different positioning, especially while Baby Girl is still tiny.
You look great! I think my guess in the baby pool will be off...you don't look very big!