Am I pregnant?

I am now 14 days missed period. (Had a cycle for 10 years and never this problem, never more than 3 days late) I did have a light period sept 1-3. Anyways. Once I missed my period completely I began taking tests. I have only gotten negative with First Response Early Result and in a doctors office. BUT about 3 days before I missed my last period, my cervical mucus changed and became heavier. My vagina also became slightly tender. That hasn’t changed. I normally do track my cervical mucus and had a normal cycle up until that day. No stress really. It’s actually a stress less time. My number 2 normally cycles with my cycle and that’s changed completely as well. I’ve been so fatigued and nauseous and sensitive to smells. Def hormonal. I just don’t know what’s going on.