Therapy(free and in the UK)

I feel like it's got to a point that I just can't deal with stuff on my own anymore. I've tried to help myself with compulsions and thoughts and behaviours and it helps to an extent but I feel like I just need more help. But I don't even know where to start, I've felt so ignored in the past and I don't even know where you can turn to. I'm in the UK so it's difficult, especially considering I'm only 17, to get any help for this kind of thing. I just want someone to talk to, something to help – medication, maybe? I want to try it, I want to see if it would stop the overthinking for a while. Stuff isn't as bad as it has been before, but I feel like I can't just leave this anymore. I just don't know who to turn to or where to go from here.

I tried contacting NOCD, but they said that they didn't accept my insurance, and even if they did, I'd have to provide co-payment. I felt devastated because I'm afraid of going to a therapist who will misunderstand me. I can't afford therapy at the moment but I might be able to in a few months. Are there any alternatives for self therapy?

I am so so so anxious, I cant even describe it. I have this horrific anxious feeling going through my body where it feels like im about to do something terrible. I feel incredibly sick, shakey, panicky. Due to this harm ocd episode. I am so scared that I might act on a disgusting horrific harm intrusive thought. I dont wanna be near knives, go to the kitchen or even get up. As im so scared that Im going to act on it. I know I dont want to but this anxiety and horrid feeling makes me feel like i do. I am petrified the anxiety is terrifying. I sat in the kitchen earlier while my brother was close and I was scared because it feels so real even typing this im starting to panic. Please respons please and please say if your uk based it brings me a bit of comofrt as I know im not alone in this country! What makes it worse is my family were talking about their aspirations and dreams then i felt even more scared of the intrusive thoughts because if i did act on them they would be destroyed and then I also feel so much guilt cos i get scared my bf is scared of me has anyone had this does it go.