That sounds like hypo-mania to me. It actually sounds like me a few years back, I'd forgotten about stuff I got up to/thought back then. Maybe go see another doc, can you get a recommendation from someone for a good one? When I went to the doc I wrote a giant letter the night before about all the things I knew I needed to say. My friend had to see three or four before she was diagnosed and she was really unwell, it wasnt until her aunt refused to leave the criss service until someone helped her neice that she got it. I'm not suggesting that, but keep trying
In the meantime, laying off the weed is pretty much the best thing you can do in my opinion. I had the same stuff as you going on when I smoked pot, all out of control, mega fast swings, really self destructive. For me stopping weed made the swings less extreme and less quick, which made them easier to deal with and learn to manage. Stopping weed calmed the storm waters so to speak.
I hope you find the help you are looking for soon, I know it's really scary when all of the sudden you find acting in a way that doesn't fit with who you are, and it's full on when your thoughts and ideas are so fast and so many.
It's cool you are looking for help too, it took me six years to get diagnosed and have just started meds now - makes life so. Much. Easier.
Good luck out there!