Depression can occur, and often does, at anytime and for anyone. Some are more easily triggered than others but everyone at some point in their life has depressive symptoms. Often times depression becomes a concern when symptoms persist for longer periods of time and affect daily quality of life activities.
Symptoms of depression:
thoughts of suicide
random crying spells
increase in negative thoughts
increased use of drugs or alcohol
Treating depression can be done with medication (anti-depressants) or psychotherapy or both. Your therapist will work with you to access if you are a danger to yourself or others because safety is always a priority. Make sure you are as honest as possible with your therapist. Once safety is established you and your therapist will work together to make sure you are taking care of yourself and have a reliable support system. You may be required to attend weekly sessions in the beginning of treatment.
Take the depression screening here from Mental Health America. There is no affiliation and you do not need to create an account.