Can the post-surgical sports bra lead to the forming of bruises? Should I be worried and wear a different bra/ no bra? (photo)

I'm getting bruises 2 days after breast augmentation (only on the left side). The buises are formed in the shape of my sports bra that I'm advised to wear night and day. The bra doesn't feel too tight! After the surgery I didn't have any bruises. I have no other support/bandages protecting my breast. I feel quite some pain on my chest muscle since the implant was placed using dual plane technique, but I guess thats normal. Should I be worried about the bruises and be without/wear another bra?