Migraines are very often associated with mental health conditions, I agree with Peggy that they are color bid but that one does not cause the other and more importantly I definitely do not think your migraines were misdiagnosed as Bipolar Disorder. I was diagnosed with migraines at 16 (I’m 40) and with Bipolar at 22, I had been diagnosed with depression and anxiety at 20, however I can 100% day without a doubt that I could have/should have been diagnosed much, much earlier than that. It’s sucks, but remember having Bipolar isn’t anything to be ashamed of and more importantly remember you HAVE Bipolar you’re NOT Bipolar you are NOT defined by your illness