also your not meant to have a bath mate, their waterproof bandages but they are not designed to be submerged in water either shower or flannel wash! seriously dont get the incision points wet like that
Also, youve had your nipples cut if they it takes alot of force to tear skin dont worry! trying to lift your arms over your head will not be helping the wounds. Relax and recover and stop panicking
EDIT: just seen your using transparent tape this seems like a really bad idea to me, it might lead to infection laying in dirty bath water. Get someone to get you some waterproof bandages so you can shower/wash etc