Sharp Pain in Left Breast Implant 3 Weeks After Surgery

I am a little over 3 weeks post op. I had the surgery for the first time last summer, with Saline implants, but developed Capsular contracture, so I got silicone now. The right breast is pain free and the left breast has a sharp pain shoot down the sides when I move suddenly. I am assuming this is nerve endings and muscle healing since they are under the muscle. But I want to be sure. I have a post op apt in 2 weeks. It hurts more if I sleep on my back, so I am sitting up still. Advice?