I've been having some issues since I had surgery to repair my Achilles tendon. My body seems to be retaining fluid, I'm gaining weight, and I've been experiencing shortness of breath, which got me wondering if it might be CHF. But my cardiologist says my heart's doing fine, and my pulmonologist says there's no sign of COPD or any respiratory issues. All my liver tests have come back normal too. They're pinning my breathing problems on my weight, but honestly, I feel like the weight gain started after the breathing issues. Could it be possible that something went wrong during my surgery that's causing these symptoms? My foot's still painful too.