Well first before you go on reading I just wanna say that I'm not diagnosed but I don't claim as having bpd either.
For a while I've been looking at my actions and past behavior It was awful of course but it's something that affects me right now , I've been searching my symptoms on google(yeah pretty disappointing therapy is too expensive atm and we struggle financially)and first was unstable emotionally and people around me told me and noticed that too even myself I sadly cannot control it so the best it to just shut myself down In my room because I tend to be really mean and talk stuff about people and how they hate me and I hate them bad tehnically a big trash talk of people I don't even know , being negative about things and also sometimes to the extreme wanting to take drugs or hurt myself (i did this sometimes sadly I'm not proud but I'm controlling myself) there's many more
Now I just wanna know from someone who has bpd if this is something serious I should look on ,like check with therapy 
Ps: I'm underaged sadly I got no money I know usually bpd or bipolar etc won't be diagnosed to minors
So please I wanna know if I should take it seriously