Hair loss

So since about two years ago my hair has been falling out a lot.like I know that everyone is meant to lose 100 strands a day but for me it’s like 400. I have really thick hair so you can’t tell the difference but it’s other things that annoy me. So my hair is all over the floor that it clogs up the Hoover after a minute, it gets all over my clothes, unfortunately sometimes goes into food etc. And when I stay at people’s houses I feel so bad because it’s everywhere. Like wherever I go there is a trail of hair!

Does anyone know what it might be or how I can help this?