Lately I have nausea a headache lasting 2days already and dizziness week long period no perscriptions no smoking what could be wrong?

Headache & dizzy. Most common cause of headache is stress or muscle tension headache. How much stress are you managing right now? If the headache is throbbing, consider a migraine, probably also stress-related. Most common cause of dizzyness is also stress. Other things to consider are low blood pressure, dehydration, internal bleeding, medication effects, or, if there is a sense of room spinning, consider vertigo.
Dizziness. These symptoms can be from many things. You can be suffering from a viral infection, have sinusitis, ear infection, may be pregnant. If it is severe see someone right of way. If you have not tried otc decongestants with tylenol (acetaminophen) to help.