help!!! I'm 17

Lily
I ever usually post on this because I never seem to need to.. however I'm 17 and I've been with my boy for about 2 years. We're always careful but honestly we don't use condoms. Last time I saw him was 2 weeks ago(we have been fighting, different story) but I'm a week late. I wouldn't be scared except the fact that my stomach feels like a black hole(as if I keep eating and it's just going no where) with sharp pains in my abs not to mention I do randomly get nauseous at times and throw up.. it lasts for 20 minutes until i yack my brains out😭 I know I know I need to get a test. But what if I'm not pregnant? What else could this be? Also every morning for the past 5 days I wake up at 5 am with an awful feeling as if my stomach is totally empty which causes me to be nauseous but there's nothing in my stomach so it's like I'm dry heaving.. sorry kind of gross but Is this like a total sign of pregnancy should I be freaking out the way I am.. WOULD a test even show yet?? Sos! Not to mention the emotional wreck I have been