I know this might either get hate for not being a 'proper addiction' or whatever, but I'm stressed out and I need advice.

I'm somewhat addicted to caffeine - energy drinks specifically. It got to a point a few months ago where I could easily drink 3 cans of Red Bull in one sitting multiple times a day if I didn't monitor myself. I have spent the last week on the verge of crying, the worst headaches and shaking constantly because I haven't had anything and I broke today and I'm about to go out and buy some now.

I don't know how to describe it; my mood is dead. Quite literally. I suffer from depression already, and a multitude of other issues, and Red Bull specifically is my crutch to do almost anything - assignments, social events, even just playing a video game with a friend, I feel like I need it to keep my mood up and have some energy.

The advice I'm looking for is firstly, is this an addiction? And two what do I do about it? Should I care? - right now I'm finding it really hard to care or be bothered by it, even with health risks, but I feel that if I know I should care, I might at least have that in my mind when I'm buying/drinking energy drinks.