Hello thanks for asking from HCM for your health related queries
I can understand your concern. You are 16 years old and it is not very common to develop depressive disorder at your age. Still the symptoms like lack of interest in activities which were pleasurable before like X-box, remaining bored through out the day, tiredness, poor sleep, worries etc are suggesting
depression. The history of crying spells, irritability also suggest depression. I would advise you to visit a
psychiatrist nearby and discuss about your symptoms and to make diagnosis of depression.
In teen age such mood swings, confusion is sometimes considered as normal behaviour, but if such symptoms start hampering day to day activities then this need proper attention. For such depression medicines like SSRIs can help. SSRIs as
Sertraline,
Fluoxetine,
Paroxetine etc are commonly used. These medicines help to reduce the depressive symptoms and will help in normal functioning. Please visit a psychiatrist for prescription.
Thanks, I hope this helps you. Take care