You can try to consult a good therapist in your area and start your therapy session. You will feel good when you will share all your pent-up emotions. Therapists are trained to help you with your traumas but if you are not comfortable talking about your past traumas to a therapist, then you can definitely share it with your family members or friends. Some people don’t feel comfortable opening up about their past traumas to a stranger even if he/she is a therapist and it’s completely okay. Sometimes, a person overcomes his/her traumas by just sharing his/her pent-up feelings. As you said, you have gone through so much at a very young age, and it is definitely traumatic and it has a strong effect on your mental health too. Therefore, you need to consult a good therapist so that you can overcome your trauma.