binxy_jay,
First, I would like to welcome you to HealingWell and to the Bipolar Forum.
You only need to get monthly bloodwork for the first few months after starting Lithium. Once you are at a therapudic dose and your levels are good you only need to get bloodwork done every 3-4 months. You would only need to get it done more frequently if your pdoc thinks it is a necessity.
You should also watch how much NSAIDs you take (like Advil, motrin, aleve, etc) for they can elevate the amount of Lithium in your system.
As Lorraine said, it is important to drink a lot of water 8-10 cups daily for Lithium can dehydrate you. Also you should try to watch your caffeine intake as well. If you have any questions or concerns please don't hesitate to ask you pdoc or just post on the board.