Pcos weight loss

Im 285, I have pcos & low functioning depression. For awhile I was going to the gym twice a day and eating low carb 1000 calorie diet. I did that for about 12 months and I actually gained weight. 3 months into the 12 months I started on weight loss meds (topamax). I stopped going to the gym because I had several breakdowns because I just kept gaining weight.

I also wake up and I feel full. Every single day. I wake up and feel like ive eaten a whole meal. Im wanting to just resort to weight loss surgery or something that will help me. I cant keep feeling like this.