This is just a question

So the last couple days I've been feeling sick first day I had gotten a migraine and threw up went to bed that night not feeling good as normal after one of those but it like 3 or 4 days later and I still feel sick in my stomach with light headache and I wake up today freezing cold and still feeling like I want to puke but haven't what could this be? And I'm nervous to buy a test because I live in a small town and some people know me, my mom, and my boyfriend. Also I've never been preggo before