(Don't say hi confused, I'm dad.)

So this is really just a symptom dump and I'm trying to figure out whether I have bipolar or not. A mental health app assessment told me I do, but I'd rather get it straight with people who've actually had experience with this. 

I've always felt weird, unusual and extremely creative. There have been times where I've thought of very ambitious projects and been very driven to complete them. Last year, I was full of energy and had a million creative and a little intrusive, if I'm honest, thoughts, that I felt like I always had to write down. This was this time last year. Now, my motivation is zero - and yesterday I spent my day on the sofa, watching Netflix.

I'm 15, almost 16, by the way. This has only really been happening for the past year or two.

I'm concerned about my experiences over the past year or two because at the peak of my energy and creativity I was part of a relationship. It was amazing and we both got on very well, but towards the end of last year, there was a sudden and concerning change to this very depressive and demotivated person I am today. The fact that there was no change in any part of my life at all that led to this sudden change makes me believe that there was (and is) something going on. I believe this sudden depression and demotivation led to the eventual breakup earlier this year.

I'm aware that I have signs of bipolar but I continue to doubt whether I actually have it or not. One minute I can feel full of energy and the next minute I can be completely flat. There's no regularity in these mood changes, I'm not sure if there's supposed to be patterns in these mood changes, but I definitely have this yin-yang nature about me. I suppose the thing to look out for would be if and when I get another manic period in the future. That period lasted quite a few months last time, so I'm wondering if my cycles are lengthy, but as I said, I can occasionally still get bursts of energy in the middle of largely depressive periods. 

Sorry for the lengthy post - just wondering about thoughts you may have on this.