How to best use a nasal spray?

You need to take other decongestant to help with the stuffiness and congested headaches. Take the sprayer and insert in nostril. Use other free hand to close other nostril. Squeeze/pump sprayer and as you spray, breath in. It will take the medication up to your sinuses to free the mucous and debri. It takes time to break up those mucous plugs and green/yellow drainage. Keep doing this as indicationed on your medicine. Get some rest. Drink plenty of fluids. I suggest gatorade. At night, take some nyquil. You should get some sound sleeping done and your headache should be getting better. Good Luck with that.