K.E.
my stepdaughters mom had similar problems. she ended up getting treatment at a place in St. Louis, mercy ministries, i think is the name. i guess they provide counceling and such, and its free if you really need it. it was worth her to go away and get treatment, because of the fact it is so dangerous physically and mentally.
Have you went to any local support groups? I suggest talking openly with your family doctor too. dont try to do it on your own, bulimia has very life threatening consequenses. getting to the bottom of how it all started is important in treating it.
ill be thinking of you.