Do you face any issues while walking like pain or stiffness in upper or lower back region..
This is usually postural and can be corrected gradually.
There is nothing much to worry about..
Next Steps
You can start with self correction of posture while standing and walking. you can observe yourself in mirror while standing and if you feel you are bending towards, you may correct your posture and try to maintain the same for a fixed period of time.. like an hour or so.
Then, you can again check if you have maintained the posture. You can gradually increase the time of conscious maintenance of posture.
Secondly, you can tell people with whom you stay for long time to check and continuously remind you to maintain the posture if they feel you are bending ahead.
These simple steps can help you a lot..
Health Tips
Posture corrector belt can also be used but I will suggest if you try for yourself, that would be much better...