Sinus Infection (Nasal Drainage)

I've had a runny yet stuffy nose that have been causing headaches since about the begging of summer vacation. So we went to the doctor. He said I had a sinus infection (nasal drainage) and I had to take a certain pill three times a day, and drink lots of water. Also he said it's had a while to develop so I might have to take it to Girls Camp. Which I don't mind. The good thing is I found the cause and maybe the cure. I'm glad of that.