Well, it looks like I'm still pg - think I'm about 6 weeks now. We are going away for a week on Sat, are taking the train (6.5 hour journey, shudder) and don't want to have to take the pushchair with us - especially as we are hoping to go to the beach while there. We have a backpack and a Baby Björn which we are still using as ds only weighs about 18.5 lb. My question is, is it sensible for me to use the BB while pg, or can it cause any harm? dh prefers the backpack and I the BB - but I don't want him to have to do all the carrying all week. TIA!