Believe me, this is where I'm at now, I have had periods of substantial time off/zero activity already with some alleviation of symptoms - however, nothing quite as long as 6 weeks. I'm not running at the moment, and don't intend to until I am better. I just don't see any way that the sores in my throat are unrelated to my condition (as would be the case if it were adrenal fatigue or a couple other suggestions). My fear is that I have contracted some type of infection that may be treatable and if I'm taking time off and there is a tangible root cause to my illness I would like to find it. Taking time off in vain would really suck. I realize that if it is a reactivated EBV infection, there is only so much you do for a viral infection.
Further complicating my situation is the fact that I am entering graduate school this fall to finish out my running eligibility. I've always been strongest in cross country, and it will be devastating to watch that slip by. There will also be pressure from teammates and coaches to return as quickly as possible.
To the poster suggesting depression - I am certainly depressed, but I believe it to be situational depression more than anything else. Everything in my life was starting to go well again following injury when this all started up. The unique physical symptoms I think are way too alarming to purely attribute to depression.