Am I pregnant?!? I have been feeling weird lately?

For the past couple of days I haven't been feeling well and the past 3 nights I have thrown up. I have been having a pinching pain in my lower right side and a pulling sensation around my belly button. I have not missed my period yet. One of my co-workers said that I have a "glow" about me and I have gained weight in my hips, thighs, and butt. What do you think?