Is this the early symptom of depression? (Late 20s / Female Depression)

These days, I feel very stressed both at work and at home.

As a result, I have become more irritable and more sensitive than before.

One day, I suddenly find myself crying without even realizing it.

I just feel like I want to leave somewhere where no one knows me.

I told my friends, and they said I might have depression caused by stress.

Everyone is worried, but is this really the early symptom of depression?

What is the best course of action if someone truly has depression?