The fact that you are bullied can have an effect on your mind as an adult. You must address it. Speak to your parents first and then to other authorities. Meet a psychologist for guidance. If you require medicine then contact a Psychiatrist

Hello dear Depression is a mood related problem which can be treated by consulting a psychiatrist or a clinical psychologist. It is essential to understand the history and other related information to guide and treat you better. To begin with try discussing it with yor parents and spend time with them. Involve yourself in activities you like and try to uplift your mood.

I understand how you feel. Please speak with a therapist who can help you with behavioral changes and other techniques to deal with what you are going through. You might also need medication if just therapy doesn't help. Having a good self care routine including proper nutrition, regular exercise and mindfulness meditation will also help.