Symptoms?

I have been nauseous for the last few days. Not all the time but in waves throughout the day. Lightheaded and dizzy, fatigue, but no sore boobs (thank God). I've been cranky and emotional...I mean I normally cry while watching a particularly sad movie or tv show but I was reading a book for crying out loud and started to ball my eyes out because the part I was reading was happy...are we serious??? Please tell me that this doesn't last for very long...I can handle vomiting everyday...but crying at the drop of a hat needs to go...lol