Iron supplement

So I’m currently 27 weeks and I just found out I’m anemic. My doctor put me on iron pills but my body just isn’t handling them well. I end up cramping extremely bad and every time I eat i end up cramping from them. I only slept 8 hours the past 3 days because of it. I have a doctors appointment Tuesday and plan on asking her about this. Has anyone tried this during pregnancy? It seems to have good reviews. My hemoglobin is currently at a 10 so it’s not drastically low.