Dizzy and Nauseous... what could it be?

For the past two weeks I've been feeling dizzy and often get nauseous. The dizziness can be tolerable to unbearable depending on the day. I was so dizzy and nauseous a couple days ago that I had to leave work. My left ear drum has been fluttering for about 3 weeks, it doesn't hurt but it's very annoying when it happens. It only lasts a couple of seconds but it can happen between 1 and 10 times a day. Any ideas? I really don't want to make a doctors appointment because I don't have the $30 for my co-pay.