I haven't had my period since March so I went to the doctor and I had my blood taken. He told me over the phone that I had folic acid deficiency (that is all he told me) and was given folate to take daily. It's been almost a week since I started taking it but I still have had no period. Also, I'm definitely not pregnant. The symptons for folic acid deficiency doesn't include stopping of periods. I've been losing hair too. Is there more going on?