Also could be a disc issue. Get off your feet. Ice pack on the parts of your leg where the pain is. If you work or go to school, wear flat, comfy shoes. Don't pick up anything weighing more than 10lbs. If this doesn't ease up or go away by Tuesday, or if your toes(or toe-sometimes its just 1 or 2!) go numb, you need to see a doctor ASAP. I hope its just a muscle pull but take no chances.