I'm also over 4 months out. And I started about 3 weeks ago. Had my p.o. appt with PA and my bld wk is perfect. She says its normal. Its just because of the quick weight lose. She told me Biotin and that it will eventually stop and regrow. I'm taking 6000mc of biotin daily. I also bought garniers new shampoo with biotin in it. I HATE the amount of hair I'm losing. It freaks me out. I have so much on my pillow and in the tub drain. My bald husband just doesn't get it. I get nervous when i wash it. Ive been trying not to but i think its gonna fall out no matter what i do or dont do. Ive always had super thick hair but not anymore. Glad I didn't have it thinned out when I cut it before surgery. So just gotta wait a bit and hope it stops. If not I'm just gotta learn how to rock a skinny body and a bald head. Ill take the trade off any day. Good luck to ya ll.