I am at 5 weeks post surgery and am walking 2 1/2 miles a day. I cant use my upper body or arms much because I also received a pacemaker and have to wait 3 months for the leads to scar into my heart so that they will not pull out of place. I am wondering if I really still need to go to rehab since I am doing the walking faithfully and am not able to use my arms yet. Any thoughts?