Having been a guinea pig to the point I was nearly poisoned to death (quite literally) I don't, I can't recommend a GP for diagnosing BPII. Chances are she read this in a journal somewhere and it makes sense to her, BUT you need a specialist, which is what a psychiatrist is.
If you like your GP, then make sure you have up-to-date blood work and check for autoimmune disorders, etc. as causes of fatigue, low energy, loss of interest in life and depression.
FYI...Bipolar IIs don't have manic episodes, they have hypomanic episodes. Whereas a Bipolar I enjoys their manic phases because it is their perception that they are on top of their game, IIs don't share this. A hypomanic phase feels like life is out of control, you don't know what to attend to first, you are overwhelmed, you talk too fast and/or too much. You long to get to a better place with yourself, you are tired of the chaos. There can be a host of other problems too, like high flying anxiety and not holding onto a thought amongst others.
Zyprexa might make you groggy sleepy. As a medical transcriptionist who does a fair amount of psych work, I only tell you that this does not appear to be the first drug of choice these days.
Get thee to a specialist, please.
The Lady Dragonfly
Yes, it was me...I know because I was there when I did it. Only on occasional Indocin and Naprosyn. Lupus with significant balance difficulties and frequent falls (getting over a recent concussion). Vegan and loving it!