sudden mood changes

I’m pretty confused.

I’ll be super depressed, wanting to kill myself, not being hopeful about the future, etc, but anywhere from the span of 1 hour- 1 day I can suddenly be happy and content with my life and be hopeful about the future.

very sudden mood shifts.

I don’t know if it’s just puberty hormones attacking me, or it’s something else, because I feel like this isn’t normal.

I understand mood swings, but I didn’t think they’d be as intense as suicidal-happy with life.

It’s extremely frustrating because it makes me feel so invalid because it’s like oh the sadness was just a phase

but the mood swings don’t happen fast all the time.

sometimes the depression will last a bit longer, but only like 5 days at the very most, and then suddenly I’ll be happy again for a while, and then depressed again a while later.

I’m so frustrated does anybody have any idea what’s happening, or does anybody else go through this?