An injury in the home stretch!

I woke up this morning and realized something was not right with my left knee. I was achy in the back of the knee near the lateral edge, so much so that I was having to baby it while walking. I couldn't figure out when something might have happened because I didn't feel anything obvious during any of my workouts. Throughout the course of the day it got worse and worse...it became clear that the motion of pulling my lower leg back toward my butt, especially with resistance, was the killer motion, and also extending my leg all the way out. My boss, who is an MD, did some testing and told me it didn't appear to be anything structural, and that likely it was a strain at a muscle insertion site. When I went to see my massage therapist, she agreed, and pinpointed it as the hamstring insertion site. I was so incredibly disappointed and bummed out the entire day just thinking about how far I've come with no major injuries....and realizing that I might not be able to complete the tri simulation tomorrow!! Glen emailed me several times throughout the day with encouraging messages that I would be ok, that my running is so strong I could go without a run right up until the race and not experience much of a negative effect on race day. I tried to stay positive, but it was really hard. I couldn't really focus on anything at work...I might as well have been any place else. Dara, my excellent massage therapist, squeezed me in after work and she worked on all the muscles around the painful area. She used an incredible machine that provides 'entymology'....it feels like a small vacuum cleaner as it pulls your skin and fascial tissue away from the muscles. I loved it! I am definitely going back for a whole body fascial vacuum treatment because WOW did it feel good. Then she used her hands and worked my hanstring, calf and IT band really deeply. When I got home I did about 30 minutes of contrast hydrotherapy, put a bunch of arnica gel on my knee and tried to be in bed by 9:30 hoping that I would feel really different in the morning. We shall see.....