Over the course of this year my mood swings have changed considerably. Ive been getting extremely upset and tearful over things that I shouldn't out of the blue, or I've been getting extremely agitated and angry also over very small things. My highs have been high and my lows have been very low, I've gone through multiple waves of feelings very very low to the point where I've been suicidal but then feeling fine a couple of days after. Not too sure if this is worrying?