Hey! I’m 7 weeks PO, I used the m&s sports bras after my op and they were really comfortable. I was a 34d before so I got a few different sizes as not sure what I would be with swelling and that. I ended up sticking with a 36d, I just made it tighter as my swelling got smaller. The nurses at the hospital picked which size out of all the ones I got fitted me best and I just returned the rest. I had 350cc also. Good luck! X