You can rest assured that it is way too early for Capsular Contracture. More likely, is that there is more swelling and stiffness in the pectoralis muscle on the left. As the skin and overlying breast and muscle relax, the breast shape will become more round and pleasing. Also, during a mastopexy, there is the ability to take out a little bit of breast tissue on the big side so as to be able to put bilateral implants of the same size. In my experience this is a way better way of doing it in that for a long period of time it's more likely that you obtain closer symmetry despite any weight changes. Congratulations on your surgery.
Thank you for your question and pictures. It is way too early to determine how you are going to heal as well as to have developed a capsule. You will need a few months to heal, especially since you had a full mastopexy in addition to the implant exchange. As for the 30 cc difference, this is a very small number and with the lift and skin removal, this difference was likely compensated for.