Welcome to PC, trucking. I'm sorry that no one saw this sooner.
I'm not qualified to make or support a diagnosis. But what I do know is that while a lot of cases of one particular disorder may look one certain way, that does not mean that someone with differing symptoms does not have the same thing. I would suggest taking what your doctor has to say in stride, doing some more research, and seeing what you can come up with. Usually the list of possible symptoms is a lot longer than the ones that actually present. Did your doctor tell you why they thought it was bipolar?