question?

Ok so I have a question I am supposed to start my period on the 16th of this month but for some reason it started the 10th super light and is now ending today I was cramping for a few hours the first day but haven't had any cramps since then me and my husband had sex Christmas eve a few days after my period ended he started joking with me saying I'm pregnant cause I was getting nauseous,dizzy,shortness of breath can some help me?