presumably you've already talked with your doc and your doc says you're okay to continue losing weight at the pace you were before. if you didn't, get on the phone and do that. many people need to maintain after surgery until their body has healed.
since you've been so far under, i'd say to add up your unders and not to sweat your overages until you get close to using up where you were under. not only did your body need those base calories, but you're also expending more calories healing.
have you asked your doc if there are any exercises you can do while healing? i know that's going to depend on what you had done, but it can't hurt to ask.
beyond that, find a new hobby. head to a craft store and find something you might like to do. or a toy store if you might want to build model planes/cars or lego things. if you'd like something a little more practical perhaps to to do your own taxes, try couponing out, plan out a new yearly budget or budget and price out diy home repairs.
-google first. ask questions later.