I used to have the type of mood that you're describing several years ago. I don't have it anymore (or at least if I do, it's for a short period of time.)

I take an SNRI antidepressant, Cymbalta/duloxetine. I also take clonazepam. Both these medications are difficult to withdraw from after you take them for a while.

I would urge you to be careful if you're not taking any medication for your moods. In my experience, depression with suicidal ideation in combination with agitation is potentially very dangerous.

The one time I've been admitted inpatient to a psych hospital was when a highly stressful event caused me to become very agitated and upset and I took a whole bottle of antidepressant medication.

I hope that you find a solution to help settle down your mood.