Am I pregnant?

So i've been really sick for the past couple of days. It all started with me just feeling nauseous and then the next day i got a pretty high fever and started feeling really sick, every time i would eat something i would throw it back up. I took a pregnancy test and it said that I wasn't pregnant. I am also on the pill and have been taking it correctly for the past couple of months but i am still paranoid if im pregnant or not. My period should also start in about 2 days.

My cousin keeps saying that im throwing everything back up and cant eat because i am pregnant. I know that morning sickness is one of the symptoms but is throwing up straight after eating food one of the symptoms?

What do you think?