The best place to ask is your own psychiatrists, and I really mean a psychiatrist who you feel comforotable to talk with, and present your symptoms
or why people think you have bipolar disorder
. That is the best way you can tell.
As a caveat, I've cross paths with people who are doctors in other fields of medicine who aren't psychiatrists, paramedics, police, nurses, and other helping or healtcare professinals who don't know bipolar disorder, depression, schizophrenia, etc..