If my hairline looks wider every time I tie my hair up, could it be hair loss?

I usually wear my hair down so I didn't really notice, but when I tie it up, it feels like both sides of my forehead look bare.

I'm confused whether this is my natural hairline shape or if my hair has thinned recently.

I heard that when it comes to hair loss, you need to look not only at the overall density but also at changes in specific areas.

It would be a good idea to compare it with the past using photos and get a medical checkup if necessary.