signs of bpd?

i dont know what to do or who to go to...and im hoping someone can help me. im 26 yrs old and have been having problems as long as i can remember but they have only started to worsen in the last 5 yrs...i can say its the worst when im under the tiniest amount of stress and that is usually at work somedays im fine laughing and joking around , flirting with the guys i work with, and then other days its all tears and wanting to hurt myself ...hating myself and everything else in the world...it gets to the point where i want to walk in front of a car or i think of swallowing a bottle of pills i see pictures in my head usually of blood , i also become very paranoid at work mostly i feel like people are talking about me or if theyre making comments about someone i feel like its directed at me and ill just completely break down its so embarrassing but i cant make it stop...ive also always feel like people are leaving me ...theres a guy at work that i like we flirt around alot and the other day he left without saying good bye and i felt like i had done something wrong or he was mad at me and i dont even know how to describe it really but i was just so upset over it when i know i shoudnt have been
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ive been looking around and i feel like its bpd or a mixture of things
im taking celexa 40mg and trazadone 200mg and its just not helping me theres more if you want to know anything just ask k thank you