There's quite a bit of info out there about this. Just go to www.google.com and type in:
marathoning and amenorrhea Here is one of the links that show up on the search:
I suggest that you read several of these, see if they make sense to you, and consider seeing your doctor. You may also want to see a nutritionist. You may have just overexerted yourself and are a little bit out of balance.
By the way, for full disclosure, I'm a guy. I've responded to other posts on this board, as have other guys. We're all friends here.
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