Am I crazy???

I had what I thought was a vvvvfl a few days ago. A digital yesterday said NO-. Today I am out of the blue extremely nauseous and dizzy. If I am pregnant, I would be several weeks along. My breasts are also very tender. Idk when AF is due or how many DPO I am. I am really nervous to take a test. Do you think I should test though? Or am I being crazy??