Can I lose hair without seeing it?

My hair has always been extremely thin. My mom and sister have the same hair and we all look almost bald when we shower. Now I’m 21 and I feel like I’m losing hair from my temple and I feel like it looks thinner. But the thing is I never see hair anywhere on my pillow, while styling my hair, in the wash basin etc. Even during shower I only lose like 10-20 hairs.

Do you always see hair falling out when you’re balding? I don’t even see hair when I comb or run my hands through it.

I feel like I’m in denial about my hairloss.

If you have a good hair shaft thickness (not fine but medium weight hair or better) you can lose over 50% of your hair without seeing it come out.