Do you think im losing my hair?

i am 18 years old and im scared that my hair is falling out i have naturally thin hair anyway but latley when i staighten it it seems thinnner i dont know why but when i curl it it seems normal. my hair is naurally curly.i havent been staightening it much lately because i dont what it to fall out. my hair gets really knotty i mean really knotty even if i spray detangler and lots of conditioner so if you know any good products that would be gratly appriecated . today i brushed my hair and 50 hairs came out i dont know if i am overreating or if this is serious. i use to color my hair alot but i stopped when i was14 and let all the color grow out then recently i highlighed my hair about 3 times. do you think this could e why my hair is fallling out?? thanksDo you think im losing my hair?
I've honestly never dyed/straightened my hair, so I can't comment on that aspect. I will always have hair in the shower drain/comb (50 hairs sounds like it may be about the same amount), but my hair does not seem to be any fuller/thinner however. I know a lot of people that complain of hair falling out like that... and they always seem to have beautifully thick hair.





Maybe try to cut down on hair treatments, hair is constantly growing, so barring a nutritional or genetic problem, it should grow in normally.