Are my 300cc going to get me to a D cup?

Hi there I am 9 days p/o and had 300cc conical polyurethane medium profile implants, my ps put me in a 32D postoperative bra as he suggested this is the size I will go to, but I have seen other posts saying that they had 300cc and it only got them to a b/c cup.  Could you pease give me some advice and/or your opinions please.  Thank you