It looks like some thinning.
The only one that can tell you is a dermatologist. Go and see him. He'll know for sure.
There are actually a few things that can be done (spceially in your case, which is quite early). Finasteride, Minoxidil, hair vitamins, dermarolling...I'd start with Finasteride if the doctor confirms you have Androgenetic Alopecia.