What could cause nausea and heart burn after eating, teeth sensitivity and a sore throat?

For three days now after every meal (except fruit) I become nauseous and sometimes get heart burn. For the last two days my throat has been feeling a little off, a bit sore, dry and tingly. My younger brother just got over scarlet fever so I could be getting strep, and just today two of my teeth started being sensitive to heat and cold. Since it's the weekend and I have no health insurance I can't see a doctor till Monday at the earliest.

Has any one had first hand experience with this before, or anyone that's a Dr./nurse that has an idea of what could be wrong?

I don't know if this helps but I'm a 20 year old female, 5 foot flat, and 100 pounds. Also I've been kinda tired lately, taking at least one nap a day sometimes even two and peeing more than usual. Please help :'(

Andrea