If it bothers you that much, by all means, get tested.
I started on Lithium a few days ago and I reseach it.
Great for mania and sui ideation. Good for depression on it's own or with an AD.
Didn't find anything for obsession. You may need another med as an add on.
BTW, I was on 900 mg until yesterday. Today 600mg. 900 mg is too much for my old
(almost a corspe) body. Good luck with your quest.