2 wks after Breast Augmentation, when I lift my arm, I have 4 raised lines pulling at the bottom of my breast it hurts. (photo)

When you are worried about anything related to your surgery your best advice is going to come from your surgeon.  S/he knows you well and presumably you trust them.  You appear to have Mondors thrombophlebitis which is benign, sefl limiting and treated symptomatically.  But call your surgeon, s/he wants to know when you are worried, will be able to see you and treat you better than the world wide web will.

If you put your arm above your head and massage the cords with moderate pressure with the opposite hand, they sometimes snap and go away immediately. Non-steroidal anti-inflammatory drugs also help.