Over the last couple of days I've noticed a crampy, fatigue type pain in my lower back. It has been pretty mild until this evening while I was cooking supper. It just overwhelmed my with how totally exhausted and crampy my back felt. It was accompanied by some nausea and slight stomach cramps too. I'm not sure how normal this is since I didn't experience this in my previous pregnancies. Anyone else have this or know anything about how concerned I should be? I'm 12 weeks tomorrow.