Nyquil and feeling as though your super hungover

[ronnie211797]

I've taken Nyquil in the past resulting in drowsiness and minor nausea, I took some today because I had a head cold that was really painful and nothing seemed to work. I have been feeling extremely nauseous, dizzy, drowsy and just plain blah. It's as if I went on an all night drinking binge. Could this be a subtle sign of pregnancy?