how to get back in shape after tram flap

acoda0023

I was diagnosed with triple negative breast cancer in 2006 and had a bilateral mastectomy and a tram flap reconstruction in 2006. I had many surgeries after to fix problems with tram flap since i ended up with necrosis in my abdomin several times.  I have been unable to do much as almost everything causes pain and am told that I can only do non weight bearing excercises (no walking) and cannot lift anything over 3 lbs.  I was also diagnosed with gastro problem where I do not digest very quickly so everything sits in my stomach for hours.  I am not allowed to have any fruit, most veg etc. (anything with fiber is out) Needless to say in the past 5 years, I have gained about 60 lbs even though I have changed my diet.  I am at my wits end as to what to do to regain the body I had before cancer.  I just keep gaining weight and don't know what to do.  Does anyone have any ideas for me on what I can do to get healthy and back in shape without hurting myself more?