Lithium Carbonate and tremors

I am taking lithium with a 800mg dosage of sodium valporate for my bipolar.But i cant sleep most nights cause i wake up every hour to wee and my throat is so dry.so thirsty.I also have acne which from my teens i never had any.i also have terrible headaches.I seriously feel like stoping as i dont even see a differences in my condition.

I have been on lithium for almost two years now....Although the does needs increasing here and there. When this happens i get the splitting headache nasuea and tremors. sometimes it is frightening but it seems to go away after a few days. Weight gain? well i've been chubby my whole life, it is a trade off. I am very glade too have been diagnosed and finally am getting stable.