Punched in the Nose

Last night I woke up rather unpleasantly around 5:45 am. I felt really cold and like I had been punched in the nose, but only on the left side. I don't think I was actually punched in the nose while sleeping because there was no pain and it only affected half my nose, but the pressure and the discomfort were pretty bad. I managed to get back to sleep but all day I've felt like there is a lump in my left nostril tickling me, making me sneeze, irritating my nose so much that my eyes water. What is this and how did it happen? Is it the start of a cold? I took my allergy medicine this morning so I don't think it's allergies but it's kind of like a pollen ball drifted in there overnight. So unpleasant.

Also, as an FYI - starting the 5th (which I guess is technically today but to me is tomorrow), I'm going to look back on where I was a year ago. I wasn't mentally or physically able to talk about my experience then, and was still very out of shape with blogging, but I don't want to forget what happened to me. That health crisis was a wake-up call to me. Even if there haven't been noticeable results since then, I mentally woke up. And I don't want to forget how bad it felt because I don't want to ever get there again.