Noticing a pattern with my episodes

I think yesterday I had another episode. It was very different from the two previous episodes that I have noticed too.
First thing that is different is the length - it lasted only about 20-40 minutes or so, from beginning to end. So far from the two prior episodes my episodes seem to last 3-9 hours or so from beginning to end.
Second thing different is the way the manic part shows up. This time it was more irritation, frustration. Both times prior it was being very happy, full of energy, having a lot of fun.
The first episode I noticed was the two days after I found out that I may be bipolar on a Thursday. It started at 3-4ish with manic, I felt very happy and amused by everything. That lasted until around 7:30pm when I suddenly crashed and I was depressed for around 2 hours or so.
The second episode was a few days after my diagnosis on a Friday. I wrote a journal entry about it.  The manic part lasted about 2-3 hours, and the depressed part lasted around 1.5 hours.
Then there was yesterday.
 
The first one happened on July 7th
The second one happened on July 22nd
Yesterday was Aug 6th
There was exactly two weeks and one day between each.
 
I will be paying a lot of attention to see when my next episode is. Also, I am thinking that the depakote may have taken a part in the shortness of my recent episode? I have no idea. I will be talking with my pdoc about it tomorrow.