Possible BPD?

Sarah • 20 - Australian - Queer - Taken 2/1/19

So in the last 6ish months my mental health has gone down hill. I started thinking a few days ago that I might have BPD and tonight I took a few different online tests. All of them came back as either moderate or severe BPD and now I don't know what to do about it. I know you shouldn't just go off what a test on the internet says but I did a few and they were all very different but all said the same thing. I've been thinking of going back to a psychologist but I'd have to tell my parents and it'd be so expensive.. What should I do?