is it normal to have pain and green/yellow area, under my breast, after my surgery breast aug? I'm 1 week post op (Photo)

Its difficult to tell from your photographs alone but what you describe sounds very normal one week after breast augmentation surgery.  The yellow and green color is simply bruising which is expected after surgery.  You should start to see the bruising resolve and the discomfort begin to dissipate over the coming few days.  Be patient.

This is a typical appearance of a resolving bruise. Nothing suggests any sort of troublesome issue in this photo. It is always better to ask your own surgeon about postop issues.  It is an integral part of your care, and you've paid for it. All the best.