What Causes Frequent Urination With Feeling Of Nausea In The Mornings?

ive been peeing a lot and well i mean really a lot the last three to four days. and on top of that in the morning and during work ive been feelin like i want to throw up.... i dont know if it is stress or what is goin on. i dont want to think im prego. since my body has been acting odd for the last few months. and i dont want to be disapointed if i aint again but any ideas on what it could be?