I agree with Ambah on the sleeping bub on their back due to the SIDs risk. Zander has been on his back for 4months, but doesn't have a flat head. Although when he is awake he's on his side, tummy sitting up against the lounge if that makes sense!

As for the baby shower I think mine was about 30wks as well. It's handy to have in time for you to get the things you still need afterwards before bub is born.