hi chan, perhaps you could pop up m&s and get one of their full support bras or sports bra with zip just while waiting for your macom. mine hasn’t arrived either and my op was yesterday and i brought something with pop-up buttons from john lewis and a few other bras from m&s. i will be discharged this morning so we’ll see if it will be a prob – shouldn’t be. hope this helps and good luck darling! x