I've had lots of sinus drainage for a few days and today, my throat is really sore. it only really hurts when i yawn. what should i do to cure this?

Not to worry. : Sinus drainage and a sore throat for a few days sounds like a virus. It may get worse over the next couple days these upper respiratory infections should begin to improve after 7-10 days.The best thing to do is treat the symptoms with otc meds. Watch for persistent high fever, problems breathing, etc. If you are not getting better after 7-10 days, you may benefit from seeing a primary care doc.