Hello

I suspect that I am bipolar (mixed).
22 years old male here. I started having depression-like symptoms and excessive anxiety with obsessive compulsions back when I was 18. I refused to take medication and eventually was convinced to it at age of 20, after a particularly bad panic attack which resulted in worsening my depression.
I was taking Escitalopram, 20 mg daily for almost a year. When I went off it, something happened with me.
I had classic manic symptoms (didn't know at the time) for a period of 3 months. I guess, I think they were.
I became very extroverted. I had states of euphoria which lasted hours with no reason for them.
Worse, I developed false beliefs about my capabilities, I firmly believed myself to be the most talented individual in my college, I started several projects none of which played out.
Through this time I was very irritable and unusally reckless; at time I would get in trouble just for the fun of it which is not my normal behaviour.
At the peak of this state I "lost contact with reality", believing in having supernatural powers and a huge conspiracy taking place in my life - obviously it ended up with incredible embarassment for me as there is no conspiracy, even though I gathered what I thought "evidence", it really did seem like evidence at the time, but from where I stand now I know it was a case of very selective thinking and a few coincidences.
Now I am back to depression...I am taking 10 mg Escitolapram again for a few months. It is not helping; it lowers my anxiety greatly but does not boost my mood or motivation (which is non-existant at the moment).

I did not know it's mania, as I had so little energy most of the time, but now I learned my low energy likely comes from hypoactive thyroid...

If it's mania, should I be getting treatment for bipolar disorder?
I need help, my depression is very bad at this point, I don't enjoy anything and I have no motivation at all, even to do fun things.

I am not currently consulting with any doctor other than my endocrynologist (thyroid problem).