Can someone just please give me a little bit advice if they can

I’m 17 I’m going into my last year of school the past few years I have been struggling really bad mentally I have suspected OCD and ADHD nothing diagnosed but I’m on my way with it to see if I do have something I keep going through randomly such horrible stages I feel so anxious and paranoid I can barley sleep and I’m like a wreck constantly but I always go numb after I feel like I’m slowly going back into this state the last few weeks being anxious and paranoid I keep crying constantly and I get such bad urges to hit or pull my hair out (I haven’t btw) but does anyone know a good way coping with this stuff?