cramps in trimester 1

Mom, I'm currently 8 weeks pregnant... I don't know why, but recently I've been feeling cramps in my stomach. It feels like I'm about to get my period... but there's no bleeding. On top of that, the nausea is really severe... Is this normal during pregnancy? I'm really worried and want to check with the doctor, but I'm extremely busy with a work project. Has anyone else experienced something similar?