Sudden septum piercing pain?

I've had my septum pierced for a little over 2 months. So far everything has gone fine. It wasn't tender after about the first month and stopped crusting around that time too. I have lessened the sea salt soaks to once a day and one washing (with soap and water) a day. That didn't seem to bother it either. But the other morning I woke up to my piercing hurting pretty bad, and it crusting pretty bad. It doesn't stink, but it does hurt. The crust is yellowish whiteish, not green. But there is a white ring around the piercing itself from what I can see. I've been cleaning it quite a bit and nothing seems to help. Could it be infected?