I rarely throw up but in the last few hours I have thrown up 5 times. Is there anything I should do?

Stay hydrated. There are many causes to vomiting. Whatever the cause, stay hydrated by taking small sips of water frequently, sucking on ice chips, and eating things like snow cones or similar items. See your doctor if the vomiting goes longer than 24 hours, or if you notice blood or dark "coffee ground" appearing vomitus.