Hair Loss Help

Hi, I’ve been loosing so much hair lately. It falls out all the time, all day long. I loose SO much hair… and I haven’t changed anything in my beauty routine and haven’t changed products in years. Literally everything has been the same for going on 2 years. What do you guys do about this? Should I see my PCP, OB or straight to an endocrinologist? I’m seriously at my wits ends and it’s tearing my confidence apart