I'm 3 weeks postop from my under muscle BA and have been instructed to wear any non underwire bra 24/7. My PS says my cleavage looks good, but IMO it is closer than it was 1 week post op (and too close!) Could this be due to bra pushing them together? I have measured a decrease of 1.5 cm between my breasts. Is it the side compression of sports bras causing this?