8 days, one of which will be almost uncontainable for a few hours, using highest absorbency tampon and towel, and changing both every 30 mins.
I've just read another thread about anaemia, and a poster said she had three days bleeding, which she wasn't sure if that was heavy. Surely that is minuscule?
Also, do heavy periods really cause anaemia? As most of what you lose isn't blood. And if you are anaemic, do your periods get lighter? So which indicates anaemia, heavy periods or light periods?