K.B.
I had a mild MCL sprain once before. I'd try to see another ortho doctor. The doctor will likely have you wear a brace, and depending on what the doctors sees at the appointment, may schedule an MRI. Mine was pretty mild so I wore a brace, reduced my activity, iced it, and waited for the swelling to go down. If it's bad, you might need surgery followed by physical therapy. Even if it doesn't require surgery, you still might need (or benefit from) physical therapy. The physical therapy can help strengthen the muscles around the knee to help prevent future issues. You might also be shown different ways to squat/bend down so that you don't re-injure the knee. Depending on the full diagnosis from the doctor, there are other things the physical therapist may also be able to do to help speed up recovery. If you are prescribed physical therapy but your insurance doesn't cover it, you could try meeting with the physical therapist and see if they will give you a list of exercises to work on over time at home.