If you’re concerned, get help. Simple as that. Don’t self-diagnose and don’t self-medicate.
That said, since this is IMHO, I’ll share my experience as a cautionary tale. A sample of one is never representative, obviously, so make of this what you will.
Through my life I’ve been variously diagnosed as major depressive disorder and bipolar (I forget which subtype). The latest was a bipolar “episode” (I dunno what the medical term is) that happened about two years ago. I sought help and was put on one common antidepressant first (sorry, I forget which. I can check my records later if it matters). It led to wild mood swings and involuntary muscle twitches and periods where I’d basically lie emotionally incapacitated on a couch all day, twitch randomly and alternately cry my ass off and laugh about how ridiculous I was being.
After a month or two, I asked for different medication and was switched to Depakote + Abilify. Though my moods stabilized, my emotional range became so narrow that I felt numb and dead all day and mentally… subdued, like there was a constant emotional haze that followed me and wouldn’t allow me to be human. It also severely impacted sexual function (couldn’t orgasm) and all in all I become very frustrated and severely depressed, though less manic.
Ironically, the emotional deadness led me to want to deaden it even further so I wouldn’t feel the emptiness. It eventually (few weeks) led to an alcoholic binge and I started taking the pills first by the couple and then by the handful and within a few weeks it led to a suicide attempt where I took all the remaining pills at once and chased them down with everything else in the medicine cabinet and god knows how much alcohol.
I never felt such loss of self-control, helplessness, or agitated confusion as I did during those few months – though I’ve never been what you’d call emotionally stable, the madness during that time was easily three times worse than any time before or since.
After the suicide attempt, I swore off synthetic drugs and have not had have any serious incidents since. In the years after, running and yoga helped MUCH, much more than the drugs ever did. I would likely try talk therapy again if I felt I needed it in the future, but not the drugs.
Not to get all hippie-acupuncture-meditator on you, but the most important thing I learned from that experience is that my happiness and sanity is a much more holistic experience than any of the shrinks suggested; an exercise routine and good friends were far more valuable than prescriptions.