Need some help with my health?

I HAVE LYMPH EDEMA IN BOTH LEGS AND DVT IN LEFT LEG ONLY 1. WHAT SORT OF EXERCISE SHOULD I DO IM MOSTLY AT HOME WHAT CAN I DO AT HOME TO IMPROVE MY HEALTH 2. IM ALSO VERY OBESE WEIGHT ABOUT 18,5 STONE AND WHAT FOODS SHOULD I EAT TO HELP MY PROBLEMS CAN ANYBODY HELP ME PLEASE I NEED A SUPPORT GROUP OR PEOPLE IN THE MEDICAL DEPT THAT CAN HELP ME I LIVE IN BIRMINGHAM UK I HAVE A TREADMILL AND A EXERCISE BIKE .IM THINKING OF GETTING A STEPPER WOULD THIS BE ADVISABLE OR ANY OTHER IDEAS I HOPE SOMEONE CAN HELP ME