I’ve had a Charley horse in my left calf for 8 days. Been eating bananas, drinking water, & Gatorade w no relief. I can barely walk today & swollen.

Try quinine. Cocktail quinine water can be helpful for this. Try several glasses of this which you can buy at any grocery store. If that fails, and the pain is persistent, then you need to find a vascular surgeon for evaluation and treatment.