My friend gave me a hand-me-down Baby Bjorn. Any thoughts about using it? Been reading about those TICKS and how carriers should be ergonomic, so this pregnant mum is getting paranoid too...

The older models of baby bjorn are not really ergonomic. Right now, the only models that are “hip-healthy” baby carriers are the Baby Carrier One and Baby Carrier We. You can go to their website at http://www.babybjorn.com/ for more info.