could I be pregnant?

KeVine
Hi, I still have time before I could test but I wanted to maybe get a few opinions. For the past 5 days I have been nauseous, I threw up, twice, Sunday night/ Monday morning (it was like 2am on Monday). I also had a really bad headache Sunday as well, I even woke up with it yesterday. My nipples are always hard, and now they are soft even when I'm cold and during sex with my fiancé. I had cookies and cream ice cream and it tasted like I had pancakes with syrup, and my fiancé coffee smells like sharpie lol. If I'm not pregnant then idk what is wrong. Idk what do you guys think??