Hello Kaidenthegod and welcome to the group

In any relationship, BPD or not, the breakup typically hits one person by surprise while the other person, initiating the breakup, has done more processing. It sounds like that's part of what's going on for you -- things seemed totally fine and normal, and then "out of the blue" she says you guys are done. That's really painful, and had to have been a shock... I'm sorry that's going on for you.
is it worth it to try to get her back or am I discarded for good
Without knowing much more, my thought is that it's too soon to say.
Most relationships except our current one end in "failure", if you think about it a certain way -- it's not like I'm still dating the ~5 or so persons I dated before I married my husband! In a sense, it is common and the norm for relationships to fail -- but no less painful.
Whether that's the case here, hard to say. The breakup-makeup cycle you two experienced can damage relationships. On the other hand, it sounds like the breakup is pretty fresh -- lots of new raw feelings, and it's possible she just chose the only lever she saw she could pull, to make things less painful or to get space (vs her thinking through/calculating that this would absolutely be a "final" breakup).
The way you respond to this -- especially if you are able to try new, empathetic, possibly non-intuitive approaches -- will matter. "Typical" advice, like "send flowers', "make a grand romantic gesture", "remind her of how much you love her", will probably backfire (is my guess, given that BPD is involved). Her feeling heard, understood, validated, and respected, will be important.
...
How long were the two of you together?
What were the initial breakups about?
What was this last fight/breakup about?
What did she say when she called?
...
Not easy stuff... but we'll be here to listen and walk with you in this.