Right breast sore at 8 weeks post BA, should I be worried? (photos)

All you describe could be normal. Your surgeon would be the best person to reassure you. In general 8 weeks is a bit early for capsular contracture. At 8 weeks post surgery, you are about 50 percent, healed, settled, shaped, softened, dropped and fluffed. "Drop and fluff" refers to the fact that as the skin stretches and the muscles relax, the implants move down and out slowly – about 1 percent a day. It’ll be about six weeks before they even begin to settle down, but they’ll be close to 80 percent settled and softened at three months. Watching their progress is like watching your hair grow. You don’t see a difference in your hair growth daily, but all of a sudden you need a haircut. 
Be patient after surgery. Give yourself a few months before making a judgment about your surgical results. You won't know the outcome until then. 
Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author

Muscle soreness is common when normal activity is resumed.As long as the implants feel soft and mobile, you do not have CC of significance.Muscle soreness resolves quickly. If the problem persists, see your PS>