Iron deficiency

Ashley

My doctor told me today i have low iron, and i should be taking an iron supplement on top of my prenatal vitamins. She suggested a specific brand of iron and i purchased it, but looking at the mg it is 45 mg of iron. My prenatal vitamins have 28 mg of iron so i am confused, mainly because google said pregnant women need 28 mg of iron. Am i taking too much iron if i take the supplements? I want to trust my doctor but im worried now. I asked her the specific amount of iron mg i needed and she said the specific brand has what i would need. Thats 73 mg of iron, is that bad? Am i being paranoid? I have never had to take supplements outside of prenatal vitamins before so im lost 😂 tia