I bought a baby bjorn carrier for ds a few years ago but didn't use it much as once he reached about 3 months, he was too heavy in it and I got the same pain in my hips that I did towards the end of my pregnancy. I'm now pregnant with dc2 and am naively hoping that I might get a bit more use out of it this time around. However, I've heard that this carrier can cause hip problems in the baby - does anyone know if is there any truth to this or if it's just rumours?