I generally have mixed states, and what you've described sounds really close to mine, except lately it hasn't been depression, but just agitated mania, I think. I've had difficulty falling asleep lately, but once I'm dead I sleep like 7-8 hours!

My pdoc told me that feeling agitated, paranoid and over-thinking can be signs of it. She said I might not be BP1, but as of right now thats my dx. She also told me that it can take up to 10 years before they diagnose BP1 for some patients. I would write down all your symptoms and show it to your doctor.