Pregnant or the flu?

I've had a fever/cold for about 2-3 days now. It's more of a low-grade fever and I have the symptoms of a cold. I've been feeling nauseated and dizzy when I get up and walk, pressure/pain in my stomach, frequent trips to the bathroom, and certain smells make me sick. I forgot to take my birth control pills 2 or 3 times this month and I am expecting my cycle in 3 days. Could I be pregnant or is it just the flu?