idk hun think it depends how much support they give you when you try them on… I tried a couple from Matalan that were post-op but I just didn’t feel supported enough or compressed so opted out of them! the M&S ones think they’ll be more supportive but if you dont try them on in the shops and buy them online maybe have a look at the reviews to see what people’ve said about the support and judge if that’s gonna be enough for ya… personally I’d just hold on till next week or till you’re officially 2 weeks to play around not using the compression bras but tots understand ya xxx