Nauseous all day everyday!

Ladies, since the first of this month I have been nauseous all day for the most part and a few of the days it was in waves and it's gotten worse in time like now I can't stand alot of smells. I can't eat certain things it makes me feel sick. I'm always thirsty and hungry. I have thrown up only a few times. I'm exhausted all the time and just wanna nap. My feet hurt everyday like bruises on my feet. ughgghhhh... These are the biggest things right now. My period is due on the 18th in 4 days. Anyone else? or any thoughts??? HELP The nausea is horrible!! Dry heaving and yucky...