You can reach out to teachers, trusted friends, and community organizations that work to end violence against women, or agencies that work with youth,or those that give crisis counselling.
Many organizations will be able to link you with support groups and help you to find shelters, housing, financial assistance and counselling. You may choose an agency or organization that deals specifically with individuals from your ethnic or religious background. Or you may choose an agency or organization that deals with a wider variety of individuals if that would help you to feel more comfortable.
Remember that many women and men who have faced forced marriage have gone on to live full and happy lives whether or not their family chooses to take them back. Only you can decide what is best for your own situation, but whatever you choose to do, make sure you have the support of someone outside your family.