Period pain

Stephanie
Lately for the last 6 months I get sick the 2nd and 3rd day of my period. I get Diarrhea, nausea, headaches and fatigue. I had a baby a year ago and I was anemic during pregnancy but haven't tested again for it. I'm thinking it's either related to anemia or my IUD. Anyone else experience this? I'm 30 years old.