Hello Roseygirl: I see this is your first post here on PC. Welcome to Psych Central. Here's a link to the Anxiety forum, here on PC, just in case you haven't already found it:

https://psychcentralforums.com/anxie...c-and-phobias/

I'm sorry you are having such a difficult time. One thing you might do, here on PC, is to take some of the quizzes & tests that are on offer. There's a link to them in the banner at the top of the page. However here's an additional link as well:

Psychological Quizzes and Tests

I'm not a mental health professional. So I can't suggest anything in the way of a diagnosis. However two concepts you might look into further would be that of the highly sensitive person as well as childhood emotional neglect (CEN). Here's a link to the CEN forum:

https://psychcentralforums.com/child...ional-neglect/

Here are links to 6 articles, from Psych Central's archives, on these 2 subjects along with links to 5 articles on anxiety & 1 link to an article on coping with your emotions as a teen. Also included is a link to an article on BPD which is something you mentioned in your title:

What Does It Mean to Be a Highly Sensitive Person?

What Makes a Highly Sensitive Person?

https://psychcentral.com/blog/10-tip...sitive-people/

https://psychcentral.com/blog/invisi...ional-neglect/

https://blogs.psychcentral.com/child...e-and-passive/

https://blogs.psychcentral.com/child...ional-neglect/

https://psychcentral.com/anxiety/

https://blogs.psychcentral.com/life-...dium=popular17

https://psychcentral.com/lib/9-ways-...ere-right-now/

https://psychcentral.com/lib/15-smal...iety-symptoms/

https://psychcentral.com/lib/top-10-...s-for-anxiety/

https://psychcentral.com/blog/techni...your-emotions/

https://psychcentral.com/disorders/b...lity-disorder/

I hope you find PC to be of benefit.