welcome!!! You've come to the right place!! I am new here myself but already am incredibly inspired by the wonderful people here and their varied successes! I have had experience on another support board in the past and find these are great when you find a great group like this
Don't let your doctor discourage you!! You CAN do this! Just remember one step at a time..start of with smaller goals so it doens't feel so overwhelming..take it 5 or 10lbs at a time if that helps. However you decide to do it, we're cheering you on