A blood test should have been done to check your iron levels. Many male Dr's are not sure what to do with women and their 'problems'

If you know you have low levels then take some liquid iron, they work faster than tablets and don't have many of the side effects that tablets have.

Never feel you shouldn't get a second oponion. You know your body better than anyone and know how it behaves. Sadly, some Dr's think you know nothing about your body so don't listen to you and your concerns.