Hi amberlynn, when you purge the pressure of the vomiting breaks blood vessels in your nose, face and eyes. Hence the nosebleeds. You may also see broken capillaries in the skin of your nose and your cheeks, and your eyes probably look red afterwards. However, if you are seriously malnourished the nosebleeds could be a sign of something else, deficiency in a particular component of your blood for example. Here is the Mayo Clinic's site on how to stop a nosebleed.
As a friend, I want to say to you that you need to stop purging for your own health. I have to ask are you in counseling actively to recover from your ED? Do your doctors/counselors know you are now purging?
As a Calorie Count moderator I have to let you know that we cannot support those who are unwilling to get help for their disordered eating behaviours - including purging.
Since you are admitting that you are purging I recommend you seek help from a professional or from a parent, school nurse, counselor etc if you aren't already.
It is obvious you have a problem which is too difficult to tackle alone, and unless you are actively trying to recover your posts are against the spirit of Calorie Count.
As far as links you can look at, and this goes for everyone, check out the Calorie Count Eating Disorders Guide for a start. Also the about.com section on eating disorders, the Eating Disorders Resource thread.
Please PM me if you want some more hel, information or support.