Felicia, it sounds like Chondromalacia or runner's Knee. Here are some links to information:http://orthopedics.about.com/cs/patelladisorders/a/chondromalacia_2.htmhttp://www.mayoclinic.com/health/chondromalacia-patella/DS00777http://www.nlm.nih.gov/medlineplus/ency/article/000452.htm
Some rest, Ice, ibuprofen are the starting points. Take a little break from running and use the elliptical can also help. Strengthen the quad and potentially tape or support the knee can be good too. Also, really focus on your form as you start back to running and build up the mileage at a reasonable rate.
I would take a break and cut back (out) the mileage this week then build back up based on the pain next week just enough to give you some confidence for the race. You have the fitness, now you just need to get your body healthy for the race.
See you in the gym and we can talk some more.