What to do if I feel really bad so I make my self purge does this mean I'm bulimic?

Probaby... Bulimia is a disorder that causes people to purge (vomiting and/or using laxatives) to deal with stress, change body image, maintain unconscious control over self vs. the environment, get back at others, and lots of other dynamics. There are medical complications--eating the enamel off your teeth, blistering your esophagus. Go to a licensed professional, starting with your GP.