I think I may be losing my hair.?

Every time I run my hands through my hair I am able to pick out a few strands. I eat a healthy diet and I'm not Malnourished. I'm only 19, so it's not like I'm an old man. I have light blond hair. I don't understand why this is happening. Is it something normal? I mean I'm not losing huge clumps of it. Just kind of a few strands.