End of the Season Blues

My track season ended abruptly, curtailed by various injuries and mysterious symptoms. Brief history: burn out at end of last cross-country, built a road bike and began cycling, spent the winter biking/running roughly 10 hours a week, sat out of indoor track season, came into outdoor season less prepared than I had anticipated, raced at a mediocre level, and finished. I don't know what the problem was; I just couldn't get myself going at the intensity needed. My parents believe that I've lost too much weight and am suffering the consequences of that; my coaches think it might be anemia, iron deficiency, and so I had blood taken the other day for testing. I won't get the results until the end of this week. And finally, I've had nagging injuries. Several weeks ago I bought a new saddle for my bike, but my body did not take to it and I developed piriformis problems in my left hip. After a few weeks I switched my saddles, but now I'm having problems behind my right knee, which I think is a compensation injury. I did some research, and more than anything it seems to be a meniscus tear; all the symptoms line up, but I don't know how I could have done it. So, as it stands, I've spend the last week, and probably this week too, not doing much training other than weightlifting an core. This is good, though, because it gives me plenty of time to focus on finals. I just hope all of this will be cleared up before the summer so I can begin training again, racing some tri's as well as looking forward to XC 2012!