Journey stopped before even getting started ?

So at a follow up appointment today I've just been told I no longer qualify for the surgery. My BMI has gone below the 35% benchmark. I'm so upset I'm just crying non-stop. I've done everything they've ask hence the weightloss bringing me below the mark. I know I can lose the weight but I also know without the tool of surgery I wont keep it off, it's been a lifelong battle for me. I don't want to go backwards and put the weight back on but that's basically what I would need to do. I'd need to regain 20lbs.