HI there, I have been feeling nauseous latley, like its not enough to make me puk, what could it be?

Well... you sure could be pregnant. I would buy a test ASAP. The sooner you find out the better. If it's not an "option" you need to find out ASAP do what you need to do and then get yourself some birthcontrol. Please remember UNPROTECTED =BABY not an option for baby either.