Yes, you are right, hormones can cause hair loss. I have been tracking my hormones for 7 years now and they are within the range that they always have been since I started watching them. If I am low on anything, it is normally progesterone. However, when I have taken my progesterone, it has not alleviated my hair loss. :( I have checked every part of my body that I know. Thyroid, Adrenals, hormones, hypothalamus, etc. I have narrowed it down to candida because my tongue is white and I have scaly things in my scalp and anal itching. I dont' know what else to think that it is.
Good luck with your appointment. I used to fly to a DR. in Florida for the same thing that you are going to in N.Y. Even though they don't take insurance, I have found them to be extremely valuable. I hope all goes well for you there.