Well if you don't want to tell your family or see a Dr. We are in the same boat. I would rather die than tell my parents.
I am so so so happy that you have read some posts and decided to try to stop. Remember if you don't succeed at first, don't beat yourself up, just resolve harder to stop throwing up and try again.
How old are you by the way? Because if you are young and in school, you may be required by your school to go to the dentist or a Dr. At one point and they will find out what you have been doing to yourself. And if you are under 18, they will notify your parents and a shrink. This might be good in a way but I know how you feel.
Please don't ever say you have no one to support you- everyone on this forum is there to help and if you ever need to talk please please pm me- I will pm you too when I have the chance.
Some tips like you asked:
i'm no Dr. But I have tried these things to help myself.
1) if you binge and throw up, don;t have food in the house. If it is not there, you can't have it.
2) think of your future. Would you like to be successful and happy?
3) before bingeing, look at the food and think "is this worth the throwing up? Than just eat as much as you need to just don't binge.

Also remeber, I don't want to scare you but bulimia (eating and throwing up) messes up your metabolism and you end up gaining weight. And as you throw up, you eat more and more and you may throw it all up but your body relaizes that it has to absorb the food faster before you throw up so it starts absorbing all the calories you eat faster and faster. So even if you throw up, you will gain weight. Only when you eat normally does the body accept the right amount of calories.

People have died with bulimia.- choking on their vomit, rupturing and organ, heart problmes, have lost their teeth, and the list goes on.

Choose to live your life and be happy- a life where your entire self can be joyful nor suppresed.

I am so so sorry if I have scared you with this stuff but I just want you to see reality of this disorder. Pleas keep posting on here ok. It helps you feel better.

I am praying for you and you are in my thoughts. Thanks for taking the time to read this... Take care of yourself and keep your chin up.

Ps- I know I am being a hypocrite but proudly for me, I have not vomited for the past 2 months because I am so scared like you and after eading some of these posts. I am 15 year old girl btw.

Thank you so much for writing. And congrats for not throwing up in 2 months, you should be so proud! :) i'm 18, but still living at home. Thanks for the facts, I knew when I started alot of risks, but for me its not only about loosing weight for me, its a stress release, its away for me to deal with my feelings but not have to face up to them. Do you get what I mean? I have tried to give up before, it lasted about 7 weeks, mostly because I was travelling around europe with a friend and we were living in such close quaters that I couldn't ever find time to throw up! But then when I got home, I guy I thought I was friends with tried to, well, rape me while I was drunk and it set me off again because I felt so worhless. And this morning when I threw up blood I knew I needed to stop, because I really, really, really don't wanna die or damage my body too much. I am deathly afraid of telling my parent because they would freak out, i'm supposed to be this perfect little princess who never does anything wrong, so telling them is not an option. Thank you again, I don't feel so alone anymore! :)