I doubt that you are manic because you are not having the grandiose thinking, but you could be having a mixed episode, which can really be miserable as I just came out of that state. Characterized by restlessness, irritability, anxiety, insomnia, agitation, obsessive thoughts. You my be Bipolar II which is bipolar with primarily depression, which is what my diagnosis is. I have very few manic episodes I'm primarily depressed or in a mixed episode. Or you could be right and you may not be bipolar, borderline fits a lot of the same symptoms as you mentioned.

Hooligan gave some great advice, even though, some may not apply.