I can only imagine how freaked out you are at this moment. I freak out when the weight loss stalls and starts to creep up, and then when I think about what's going to happen if it starts to creep back once I've reached goal. Yipes! Sometimes, the potential disappointment keeps me from moving forward with my efforts!
What are you feeling lately? Because you know that's what this is about. Can you do a bit of an honest emotional house cleaning to get to the root of the problems for you?
Angry, sad, afraid, guilty...don't judge yourself for feeling what you're feeling.
And if you're off exercise for now, did the doctor tell you that you can't do anything?