5 days post-op, I'm concerned about the current lack of symmetry as well as possible capular contracture. Is this normal? (photo

At 5 days post operative you are very early in the healing process. It is unlikely you would have developed a capsular contracture at 5 days post operative. It is normal for breasts to feel hard and tight at this point. Swelling will conitnue to subside with time and implants will settle with time. 

At
this point in your recovery, it is much too soon to be worried about the
outcome. It is not possible for you to have a capsular contracture at 5 days.  It takes time for the implants to settle into position and the
skin and muscle to stretch out to accommodate the new implant. It may be
6 months or more before the shape has reached its final look. Be patient. What it appears you have is muscle spasm.