I'm five days post op and I thought it'd be a good idea to take a nice walk at my local marina. But when I did, I was super short to breath. I'm thinking it may of been because of the heat because before surgery I'd be able to make that walk with no problems. Did anyone have this problem?

Being only 5 days post-op, my first thought is that you may not realize how much energy your body is using to heal itself right now. I was super exhausted for the 1st 2 weeks post-op and it took a good 6 months before my energy levels returned to normal.

Try taking several short walks a day instead of one long walk. Energy is a real issue in those early days when you are barely getting any calories in and are using so much energy to heal. Walking is important, but it should be short and frequent, instead of one long walk.