I have stiff neck how can I tell if its a symptom of heart attack or meningitos. Mo fever, no nausea, no dizziness or anything just neck pain?

Not likely seious. With a heart attack you most likely would have pain in the left side of neck, with radiation down your left arm, sweating, fast heart rate, nausea, and chest pain. Not likely meningitis without fever, headache, nausea, or dizziness. Try gentle massage, heating pad, tylenol (acetaminophen) or motrin. Make sure not to sleep with head in awkward position or have cold air blowing on your neck. If persists seek help.