Am I pregnant? Confused

Hey

So I tested last week.. negative..kool and got a two day period (normally 4) on day period should be due.. thought ok definitely out...but today I was frying and the smell was making me dry heave, every time I smelt that was making me nauseous and feel sick. If I had to go back to the kitchen I literally had to cover my nose. I couldn't even eat the food i normally do enjoy because associating with the smell. So just confused , should I test again? I had this smell thing with my first.