I'm 16, and I got my period about 4 yrs ago. It evened out after a year or two, and was, on average, about 7 days long. About a year ago I went vegetarian, and in the span of six months skipped about 3 periods... After that, things seemed back to normal, for a while.
About 3-4 months ago, however, my periods started getting really wacky. I've been bleeding for 2-3 weeks at a time, not heavily at all (on the heaviest days I'd go through 2-3 tampons). Then I'd have, like, 3 days off, and then start bleeding again. At the beginning and end of my period, the blood would be more so a light brown than the usual red. I get some cramping on the first day or two, nothing too bad, but otherwise there is no pain or anything.
I'd just like to know what you guys think about this... could it be something about me being a vegetarian? Is it temporary, and should I just wait it out? Could a lot of stress cause this (b/c according to some stress tests, I've had a very bad year... )?