IDFK

Has anyone else been feeling this? Like there's this thing that's been happening to me for maybe a year, I'm not sure, but what it is is that my emotions have been changing around every week to a month. I'm not sure why exactly but like I'll go from really happy, talkative, jumpy, increase in my confidence, energetic, hearing/ seeing things that aren't there. To a really sad, depressed, low self esteem, suicidal, tired, not wanting to do anything, easily irritated. I feel like I've always had this happened to me but I'm just now realizing it.