Chemotherapy Hair Loss

My Dr. recently diagnosed my hair thinning as loss of hormones following endometrial ablation. I have just started taking Necon 1/50 (birth control pills containing 1 mg of norenthidrone and 50 mcg of mestranol). I was curious as to approximately what the time line is for when I will stop seeing so much hair falling out.
I have regrowth. I also started using women’s Rogaine and
taking hair, skin and nail vitamins for about 2 weeks now.
The hair loss has been going on for approximately 2 months. I am 40 years old.