Too much bleeding

[ladyariadna.livejournal.com]

OK, this is the second time in less than 6 months that I've had a 16-day cycle. Normally I'm between 21-23 days. About 2.5 months ago, I moved into a barracks where I live closely with one other girl (who's on Depo and doesn't get her period) and 4 others down the hall. I don't know if we're all messing each other up or not, but this wacky cycle bidness is getting old!!!

Has anyone else experienced this? (Oh yeah, I've had a copper IUD for 10 months now.)