Oh the tiredness... anyone else

So I'm 36+1.... I got my blood results back from the hospital that my iron levels are dangerously low. If I don't take iron now and get them up I'll need a blood transfusion after birth. But more so this last maybe 2-3 days I haven't the energy at all to do anything. All I have done and wanted to do is sleep. My man works ALL day, and I've a 1 year old to run about after. So getting the proper needed rest is hard. My chores have fell way behind my house is just filthy. And piled with washing and dishes and toys etc. But I really can't pluck up the energy to move at all. Feel so filthy. Anyone else go threw these phases in pregnancy?