I am trying to get things organised for my hospital bag and had a look at nursing bras. I am very small chested, pre pregnancy barely a 32A and now at 32 weeks I am either a 32B or 32A depending where I buy the bra from, and only wear a bra to give the illusion of having something there rather than for support . How do I know which size to buy and am I better waiting until further on to see any growth?