Thank you for posting at Doctor spring.
A swelling that is seen on standing and disappearing in lying down posture can be Hernia.
In your case, it looks like fat deposit.
Simple investigation like Ultrasound will confirm the diagnosis.
If it is Hernia, it has to be repaired surgically. If it is fat deposit, you can get it removed by Liposuction.
Please reduce your weight.
Hope this helps, please feel free to discuss further.
Wish you good health.