If your doctor says you should walk every day, but your feet are swollen, so the!

If your doctor says you should walk every day, but your feet are swollen, so they hurt during your walk ..?

and even worse after, what would you do?

2 days ago
My doctor already saw my feet. That is why she said I can walk slowly. Also, I tried swimming and I love it (even with my oxygen tube getting in my way), but because of my immune system, when I am around crowds, I get sick. I have to try to stay off of antibiotics, because I already can't take quite a few. Thanks for some good advice, but I can't take it.

I would still do what the doctor said to do. Doctor knows best.