Hi Laura,
I now exactly how you feel, I keep having moments of panic lol.
I have been asking the same question as my op is on the 18th Dec and I think the Macom bra’s look like the best ones I’ve seen, they are pricey but after all i’ve spent on my op, i’m not going to scrimp on aftercare!. I have read a few post on here and searched a lot on the internet, the general consensus seams to be stick with your current back size as it won’t change and because they are the Macom ones you don’t need a cup size thankfully!
When is your op hun? =o) xxx