How do you know if you have capsular contraction?

I'm 9 months post-op for submuscular saline breast implants, and I have been recently experiencing pain on the right side. Both breasts look natural, as expected but the right side is a little more firm to the touch. I will add that I am right handed and sleep on the right side more so than the left.

How do I know if I'm developing capsular contraction on the right side without contacting my PS? I have been to all my post-op appointments and got the good bill of health from him. I was instructed to call the office for any issues but am I overreacting. Is this pain normal? Please help!

- TIA