I agree with Christina that at least there may be a Borderline trait or two, but in my opinion, having read everything you've written, your moods are, for the most part, and to use an unfortunate phrase, 'normal'...

If you test/ask a massive cohort of people about their changes in mood and the reasons why, you will find exactly what you have written about: mostly stability, however with ups and downs, largely in response to environmental triggers. If a graph were drawn, I don't see your moods entering dangerous territory.

It appears to me that you *want*, above all, a diagnosis. That is, you want us to support the notion that something is terribly 'wrong' with you. I can't support this, for the reasons cited above.

I do suggest, as many have, that you consult a pdoc, however I would caution against presenting as a 'typical' BP patient in order to get the diagnosis you seek. If you do see a pdoc, please go in there with an open mind. Keeping a mood journal is a great idea, but please don't go in there with your mind made up.

I think that taking breaks from the internet/social media might benefit you. And I mean your mental health and your search for a diagnosis. It can become a feedback loop that either confirms or denies your own opinions concerning your mental health, and I fear you will set aside any suggestions that you might not meet the criteria for the diagnosis you're wishing for.

I wish you the best of luck. I do hope you're able to get referrals to a pdoc and a therapist. Also, Christina's suggestion that you do DBT I think is a good one. I haven't done it, but my understanding is that it's not just for those with BPD, and that it could, potentially, help everyone and anyone.