I am 45 yrs old. For the last year, I've been getting a lot of hormonal symptoms, such as frequent, heavy periods (every 21 days) that last 5 to 7 days, mood swings, headaches, lightheadedness and tiredness. What concerns me the most is the frequent periods and heavy bleeding. I went to see my GYN doctor on 10/18/07 (I had gotten my period on 10/17, only 21 days since my last period of 09/26). She prescribed progesterone pills, vitamins such as folic acid, vitamin D, multi vitamin and iron. I started the progesterone and vitamins immediately and by the next day, my bleeding had calmed down. By the third day, my period ceased. I have not felt this good in a very long time. I could swear by the progesterone pills and the folic acid. I want to make sure that taking the progeserone pills is not going to give me other side effects. Maybe you can give me your opinion. Thank you.