enough is enough
I belly dance and am inside (in the air conditioning). It's a blast...took lessons years ago and have just started back doing it (my doctor gave me the ok). You might see if there's a class somewhere near you. You'd be surprised how sexy you feel, and it's great exercise. Just make sure it's ok with your doctor first.
And if not belly dancing, then some form of dance. I weighed around 250 pounds when I took, and the teacher smiled and said "how can it be belly dancing if you don't have a belly?" (She was so cool.)
Marcia