Hi, for the past few days I had a blocked nose at night and then it would clear up in the day time. Today, however, I woke up with a blocked nose which hasn't cleared but rather got worse, phlegm in throat, sneezing and a stabbing pain in my back on the lower right side. I did not wake with the pain in my back, it started later on in the morning but has not eased up. What is wrong with me and what do I do?