Hair loss. 4 months after birth.

I have lost literally half my hair starting a month ago. I'm really depressed. I struggled in the past with feeling non feminine and having long hair made me feel feminine. Now that I'm losing so much hair these feeling are coming back. I'm not happy. I feel ugly. I see my hair in the shower drain and cry. When I brush my hair the brush is full of my hair. Nothing I do is stopping this. I changed my birth control. Taking vitamins. Change my diet. I feel like I'm not too far away from being bald. My husband just doesn't understand how emotional this is for me. He tryst to be supportive but he has no idea what it is like.