I've been trying to grown my hair out for the last year or so. Recently I've notice my hair is falling out LIKE CRAZY.

I was taking prenatal vitamins prior to it falling out (to help with growth). Could the lack of these supplements cause so much hair loss?
I started taking biotin last week cause I heard it helps strengthen hair. Has anyone else tried this?

I get trims every 2-3 months and only use a sulfate-free BedHead Foxy Curl Shapmoo/Conditioner.

What am I doing wrong???