Try get one that fits your current back size. I was a 36small b and had 375cc so I got 2 large macom bras they are a tiny bit big now 7 dpo only by a cm or 2 but there is absolutley no way id have fit in anything smaller straight after op. I blew up like balloon haha anything smaller would have deffo cut in to my belly.
The macom bras have expandable cups so you don’t need to guess the size you will be either. I’m sure there are cheaper versions of them but used code “MYA15” to get a discount on them. Xx