Most humans have some deviation there, and anyone who has played a contact sport has one. I got mine from playing basketball and getting a lot of elbows. Most of us don't notice anything from having one. You apparently didn't either until a few days ago, so it's unlikely to be from that. In life we have a lot of sensations. Right now is fall, ragweed season. Maybe it's that. Maybe you ate too much wheat or dairy or other foods that are known to cause a lot of allergy problems in a lot of folks. Who knows? If you're breathing fine, give it some time and relax and if it goes away, it's gone. Sinus infections wouldn't cause that, and they virtually always go away on their own. You probably don't have one. Anxiety can cause tons of sensations, but mostly they cause us to focus on things we would ignore otherwise. Whatever you do about your nose, the anxiety is a bigger problem, so get to work fixing that. Are you in therapy with a psychologist who specializes in treating anxiety? If not, time to do that.