Well my friend, you definately made a good choice asking for advice and you seem to have a lot of insight into the way you are feeling.
Although most of us here in this community are suffering from the disorder ourselves, we aren't qualified to make any kind of diagnosis for you. However, some of the behaviors you are talking about do match symptoms of bi-polar.

You say you dont think its a big enough deal to see a doctor about it. My advice is to tread with caution. If it was a big enough deal to you to share your story with this community, then maybe it is a big enough deal to see a doctor about.

You also say you want to wait and see if you ever get these cycles again. My concern for you is what if it does happen again and the choices you make during that time are even more distructive or harmful in some way. I just dont want anyone to go through the legal and physically distructive troubles that I did when I was undiagnosed and spiralling out of control.

I really hope this helps and you make proactive decisions with your mental health. Wishing you and your family the best of luck in your struggles.