Hello everyone! Could you please tell me if taking iron tablets could…

Hello everyone! Could you please tell me if taking iron tablets could affect my child? My daughter is 5 months old and I've been taking Hemalplex for two days now, and my daughter has been having trouble sleeping at night, kicking her legs and unable to find a comfortable position for sleep, and started pooping four to five times a day, although she used to poop once a day. I don't know if they are related or just that I am overthinking it.