Gaining Weight

I've been trying to lose weight for the last month and a half. Instead of losing though, I've been gaining. Since 1/20, I've gained 4 pounds... Idk what to do.
I've tried a low calorie diet, I can't exercise  much due to a heart and lung problem, and I don't like to eat healthy. I've never had trouble losing weight before but now idk what to do.
I've done diet pills, yogurt diets, starvation, 1 meal per day, etc as diets before but none of them are working now.
I'm just so hungry lately so the 1 meal, starvation, and yogurt diets just aren't working.
Any suggestions??
Edit: Never said I was looking for a healthy way to lose weight.