How are you feeding at the moment do you do the lift the top or undo the buttons? I found with a lift the top by the time I had bub there you couldn't see much at all (DD-E cup) but did the blanket tucked into the bra too while getting the hang of attachment. I also used to wear my bellybelt (wide strip of fabric) to hide my baby belly if I was feeling self - conscious.

Also mothers rooms are meant for BF so it should matter if you have to take your entire top off and feed there! Lots of them have private cubicals too.

With your pillow I used to pop mine in the bottom of the pram!