Confused and worried

Keia

Hey y’all…so ummm my fiancé and I had sex 5 out of the 7 days I ovulated. This entire week I have been nauseated and my back is killing me. We went and got lunch today and after eating I was nauseous but not enough to throw up. I took a digital pregnancy test and it was negative and last week I took one and it was negative. I ovulated Jan 21-27. I think I’m over worrying myself.