Question: how to get rid of a headache right away?
Answer: Use over-the-counter (OTC) medications. Taking an OTC pain medication like acetaminophen (Tylenol), aspirin, or ibuprofen (Advil) may help to relieve pain and reduce fever.
Apply a cool compress. Using a cool compress on your forehead may help with headache relief. ... 
Try a gentle massage. ... 
Get some rest.