Please help me. bulimia is really hurting me and i don't know how to stop. ?

See a psychiatrist: Evaluation & treatment, especially of disorders like eating disorders can't be done over the phone or net, get an appointment and go see a psychiatrist.

Bulimia : You need psychologic treatment to help break the cycle and prevent recurrence.

Bulimia : Professional counseling is your best option, it is difficult at best to overcome this without professional assistance & guidance

Consider diet change: Answers to Appetite Control: New Hope for Binge Eating and ... Book by James Greenblatt and Virginia Ross Taylor This would be worth reading. A casein (milk protein) and gluten(wheat protein) free diet might be a good choice.