Do you feel comfortable with it? I find I worry about my baby the whole time she's in it and I can usually only wear it for about 30 minutes before my back starts to hurt. Am I wearing it wrong, do you think?

it looks pretty comfortable, i mean it looks like it has good back support. seems to me that you'll be able to wear it for longer if u just keep using it. your back muscles will get stronger. just don't lean to one side or you'll have back problems later on. try to stand straight.

I also worry about the baby's comfort. I've followed the instructions, but I just don't feel confident about it.

I had something similar but not a baby bjorn. I only used it when necessary. I found it hard to get the baby in and out.