Girls, hi! For the past 3-4 days I've been suffering from terrible nau…

Girls, hi! For the past 3-4 days I've been suffering from terrible nausea, my chest is very painful (I can't touch it), frequent drowsiness, and I don't feel like doing anything, bloating in my stomach. I took a test, it was negative. Can you please tell me why this is happening? Has anyone else experienced this? I really need your answer.