I don't know if i have depression for sure as i cannot reach out to anyone what do i do?

Explanation : What do you mean that you can not reach out anybody? Parents, friends? They can not make a diagnosis but can help you to speak out. It's usually helpful somehow. For doctor appointment you anyway need adult person /parents. If you lost someone you love this is depressive reaction what is improving with time. You can get a help and medicine just from doctor.

Many Ways to Tell: Depression can manifest in many ways. These are main symptoms: feeling bad about yourself, losing interest in things that used to bring you joy, fatigue, poor concentration, poor self-esteem, guilt, pessimism about the future, wanting to die or hurt yourself in some way, sleep problems, eating problems. See your primary doctor or call a therapist to get help.