is all this normal?

Im not a Dr but you just went thru a major change to your body. Your hormones are all out of wack , the birth control will help bring it back to normalcy. Why not ask your Dr to see if you could benefit from horomone replacement therapy for a while. Or Check a natural herb list and see if you can add any particular herbs to your diet to help balance those hormones. If you cant find it , such as online, check with an herbalist or even a Chiropractor for suggestions. It will take a while. Use Pantene shampoo it renourishes your hair and add vitamin supplements to your diet.