Don't be afraid to tell your doctor that you don't want certain meds. I'm not handing out medical advice here, I'm just saying you have a choice in your own treatment options. Sometimes another medication in the same family will work better with less side effects. I happen to be very, very sensitive to side effects on almost any medication, and I couldn't tolerate any of the meds I tried for my anxiety/depression. In the end, I just got through it on my own, with God's help, and the life-saving techniques of CBT (cognitive behavioral therapy) and relaxation/breathing exercises. Mind you, it took months to really feel better, and years to feel somewhat "normal" again.
I now know that I'm very susceptible to anxiety and depression, I've learned what triggers it for me, and I try to avoid those things. And when I do feel myself slipping back into that state of mind, I now have the tools to fight back and get myself on the right track again. Life is hard, man... it's hard for everyone, it's just that people like you and me will always have to deal with it a bit differently because of the way we're wired. But we aren't freaks or weirdos or "damaged". We're normal people with "slightly different wiring" lol. That's how I look at it.
But the side effects you're feeling are very normal for being recently medicated. It's up to you if you want to keep going and see how things pan out (they say it takes a few weeks for the actual relief to hit). Some people can't manage it, though, and that doesn't make them wimps or losers. Keep in touch with your doctor and again, please find a therapist or counselor to work with you alongside your doctor. Medicating someone doesn't "cure" mental illness, it just temporarily manages the symptoms. It's like taking aspirin for recurring migraines; it'll make you feel some relief, but it won't make you stop having migraines. You need to dig down to the source of WHY you're experiecing bipolar disorder, and go from there to learn how to manage your thoughts and emotions in the future, to become a more functional and healthy person.
Sorry, didn't mean to get preachy...