Connection between seizures and mental illness

I am a 43 year old female.  Married with children and work a full-time job.  My first "recorded" seizure happened about two years ago. Since then I've had 4+ tonic clonic seizures. I've also been diagosed with ADHD, chronic depression, & Bipolar Disorder. Since I've been reading & investigating these seizures, symptoms and warnings I'm noticing a lot of things that resemble the afore mentioned mental diagnosis.  Could it be that I've been misdiagnosed all along?  I'm still trying to make some kind of sense of everything I've been going through.  I should mention, I do not have any medical insurance and constant visits to the doctor's office isnt possible right now. Any input would be greatly appreciated.