We have an Ergo which is great for carrying my 12kg bubba around, can barely even feel she's in there, although front carry does pull a bit when I am trying to do things, if I am being active it's back carry, if I'm just running into kindy it's front carry.

Not sure what a Bubba Moe is but I'm not sure how an Ergo wouldgo with a preggie belly as the hip/waist strap is what keeps bub in so it def needs to be donw up and carries most of the weight. I find with my post baby belly (yes still) I end up looking a bit like a pork roast if I'm not careful.