Losing Hair???

Hi I’m losing my hair and don’t know what to do. Had a thick pony and now I don’t. Definitely lost at least 25% maybe close to half.

I’m really stressed, changed shampoos, got a new kitten. Any ideas on what it might be?

My roommate is having the same issue so now we’re really scared. Noticed it at our old apt. Moved out a week ago.

I’m just so sad. I love my hair and am afraid I’ll keep losing it.

Anything that helps?