Anemia

I am 30 weeks today with boy/girl twins and am struggling with anemia. I'm taking a prescription but I don't feel any better. In fact I feel more exhausted, tired, and just want to sleep as the weeks go on. Anyone else suffering of has suffered from it? It's honestly playing with my mind and emotions. I know I'm carrying two babies and that's a lot. Any foods other than red meat, leafy greens, or cereal that is a good source of iron?