Hi Rubabe. Thanks for posting your question here.

On the basis of all the information you have given you could be looking at the possibility of a range of diagnosis, not necessarily BPD, and even if it was BPD, you would really need the diagnosis to come from a qualified mental health practitioner.

I understand what you're saying about being 18 and the label. It's not something mental health practitioners would want to throw around lightly. The other possibility is they may have some idea on something, based on your behavior but are not necessarily feeling the need to disclose it. Maybe. Although one could argue that.

You have made reference to the term "manic". This is a term used to describe someone with bipolar. Have you officially been diagnosed with bipolar? If not you may simply be using the wrong term.

Do your doctors know that you are stopping Zoloft and supporting you in this decision, or is this one something you've just decided to do on your own?

Look. My summary would be this. See first if you can get a professional diagnosis from a mental health practitioner (unfortunately no one here on this forum can do that). If that fails, you really do need therapy and should ask for a referral to see a therapist to start addressing your behaviors, if you are not already doing so. And your doctors need to be informed as to what medications you are or aren't on. They may be willing to look at an alternative if Zoloft really wasn't working for you.

Take care.