If the amount of hair falling out increases when I wash my hair, is it the early stage of hair loss?

Lately, I am worried because the amount of hair falling out when I wash or dry my hair has increased noticeably.

It seems like my hairline has lifted a little too.

I don't know where the hair is falling out from, but it breaks my heart to see long hair stuck in the drain.

My hair is on the thinner side; is hair aging also progressing? Could this be a symptom of hair loss? I feel like I am going through menopause.

I can't tell if I should go to the hospital or try changing my supplements or shampoo first.

For those of you who had early symptoms like me, how did you usually start managing them?