Help me cure my headache please??

My sister is very upset with me again. I woke up with a headache this morning that medicine hasn't touched. It's so bad I'm nauseous. She is mad because it's not safe for me to drive this way and I don't feel well enough to go watch her track meet. I really wanted to go too. Anything that can help me get rid of it? I only have 30 minutes to get rid of it and be to her meet on time! Please help!!