I was diagnosed Bipolar Type 1 but the manic-depressive cycles have gotten shorter and much more frequent. 
Back before i was diagnosed the depressive episodes lasted a couple weeks, manic episodes at least 5 days.

Recently I my mood went from wanting to kill myself and crying for hours, to energetic and outgoing, back to seeking any sense in existence, just to feel on top of the world and being impulsive again in the span of a single day. 
These extreme mood swings are too short-term for Bipolar disorder to be the reason. 

Is this a mixed episode, or is BPD or something else? 

my next appointment with my psychiatrist is in a week, but i would prefer to get some opinions on this from you guys, thanks