Thank you for your query.
I think you need evaluation for thyroid
function Plus healthy diet and regular exrcise is the only way out for losing weight .
Since your weight is affecting quality of your life you can consider an option of bariatric surgery
which may work in your case .
I think you should see a physician for this problem and get him evaluated.
Hope you are satisfied with the answer.
If you have any further queries feel free to ask.
Wish you good health.