This may seem like a receding hairline from the frontal edges but it's hard to tell by just looking at the picture. Did you go to a dermatologist? If not, then you must visit a good dermatologist near you. I guess you are not losing hair except from the front, right? Visit a good hair doctor near you, he/she will be able to examine your scalp properly and will advise any necessary solutions.
Rest, maintain a good diet, have a good water intake, take adequate sleep, and most importantly don't take any sort of stress. Hair loss happens when there's something wrong inside our body. Use a holistic and integrative approach to your hair and scalp health. Thanks!