I've haved pressure in my forehead and temples for three days it comes and goes and i've had cramps and some discomfort in the left side of my stomach?

Sounds migraine-y: to me, though you're lucky it is just coming and going and not constant. The stomach discomfort is probably a mild bit of nausea. Try an OTC motion sickness medicine and ginger ale, be sure to keep a small amount of food in your stomach at all times. I have a checklist on migraines on HealthTap that could help you if you can find it. If things get worse, don't hesitate to see a clinician.