I’m 10 weeks post op and not going to lie I’m still wearing my Macom when I want a comfortable bra or to bed so that should be fine. I also measured myself and then bought bras online and those one are more uncomfortable than when I have gone to shops and been measured properly so I think I would def wait till you get the chance to be measured properly.
I made the mistake at the beginning to just measure myself and try on that size and if it felt okay just buy it. But OMG massive regret!! I think I was just really overwhelmed and was looking at these huge bras (not even that big like 34D/34DD 32E/32F) like no way are those going to fit me because my brain hasn’t adjusted yet! So I was wearing a 34D then when I finally got measured I was a 32F!