Welcome to the forums @SJD
Bipolar is a wild beastie, and the ride is anything but smooth and predictable. Speaking from my own life with bipolar, it probably activated when I was 8 years old. I lived with bipolar in near-total ignorance until I was first diagnosed with depression at the age of 40, then rediagnosed with bipolar about 6 months later.
It is definitely so much better being aware of the problems instead of living through them ignorantly as I did for decades. Since 2011, I have spent a lot of time on mental health forums. I find that the textbooks and the mental health diagnostic manuals are all well and good and an important source of knowledge, but nothing beats conversation with people who have similar lived experiences. I have learned more from mental health forums than from any other source.
When we write our thoughts out (or speak them out), our brains process things differently than if they are just the usual chaotic thoughts churning around in our minds. I can definitely understand that you want to reach out, and I applaud you for doing that. Please feel comforted in knowing that you are definitely not alone.
During these chaotic times it is no wonder that people with mental health issues are being triggered more than usual. It is wonderful to hear that you have a strong support network. Do not feel bad about relying on them in times of need. The moment I started my journey towards improved mental health was that scary moment when I realised that I didn't have all the answers, and that I needed help to find my way. Fellow sufferers helped me to gain a sense of perspective, and to shine a light on hidden recesses within myself that I didn't even know existed.
Much love and respect to you. Welcome once again to this wonderful community.