1 week 2 days post-op. Normal or concerning? (Photo)

It sounds as though your plastic surgeon is giving you proper advice.  The very dark purple area on the lower areola may have some superficial skin loss which will likely heal with a pink color.  Continue to follow with your surgeon.

and wound care and hope for the best.  If the darkened areas blister and there is pink underneath it, that is good.  If it gets darker, cold, and hard, you will have some tissue loss but it should heal with supervised wound care.