Treatment For Headache, Nausea, Abdominal Pain And Cold Flashes

Hi i have been getting headaches off and on for a bout a week now and i have hot and cold flashes. I have a pain in my stomach that sits around my belly button area and nauseaus feeling. I have never had it before please help me Im 20 years old 5'8 and weigh about 140. Never had issues like this before.