Test Results

My hubby and I have been actively trying for a baby since July. The doctor sent me for an ultrasound which came back as normal. He also sent me for a blood test which came back showing that I'm anemic. He wants me to start taking an iron supplement. My question: I'm already taking a prenatal vitamin that has iron in it so do I take a separate iron pill on top of that or should I just talk folic acid tablets since that's needed when TTC and a separate iron supplement? I know too much iron isn't good so that's why I'm confused. Thanks :)