I had something similar happen a couple of years ago when we first moved to Brisbane, in the end it turned out to be stress, every time I washed my hair there would literally be clumps of hair sitting around the drain hole, so much so that I still have no idea how I wasn't bald by the end of the month.

I switched shampoo/conditioner to something for repairing hair, I went with the kerastase resistance range but there are many cheaper options out there, I just found that one really seemed to slow down the fall out for me.

I still go through stages where it starts to fall out if I find myself overly stressed.

Has anything stressful happened recently?

Oh and I also straighten my hair regularly as well as abuse it with dye/bleach lol Hope it settles down soon!