Hi. Don't do something permanently stupid because you temporarily are experiencing withdrawal. I understand you have a headache and feel miserable. People with the flu feel the same way. Take a Tylenol if it's a problem and tough it out. Temporary discomfort is not a reason to cave. Nothing you're experiencing right now will kill you, but tobacco sure as hell will. I haven't met a person yet that couldn't handle nicotine withdrawal. I've met many who CHOSE not to handle it, but none that COULDN'T handle it. My point is simple - find your sack and don't turn back.
On a good note, everything you're feeling right now will pass, but it's going to require willpower, accountability, and a strong desire to want to quit. Do what the others said and flush the content of your cans down the toilet. Don't put it in the trash, don't put it out of reach, or in the car. Deposit that shit directly into your town's sewer system where it belongs. Allow yourself to feel terrified or regretful as you do it - it doesn't matter. Your money was wasted the moment you bought it, so there is no harm in flushing it even if the can is full. All that matters is that it's gone and stays gone. Stick with your quit and you'll be feeling better and better by the day.
Quit with you today!