Hello everyone!! ^_________^
Have you got a crisis team you can call? I got referred to them because I suffer from psychosis, but you can self refer if you want some extra support. They're much faster than CMHT in my experience, and give more intensive support if you need it. Even if you just need somebody to talk to, they're really really good. They can usually do home visits as well if you need a bit of extra support.
Have you tried writing things down? I don't know, it might sound stupid but it always helps me to say what I want to to my doctor. That way you can always just show them the notes you've written if you find you're struggling to say it out loud?
How long have you been on the sertraline? If it's any consolation, it did nothing for me. Psychiatry takes quite a while to get right, in my experience. I've been on more drugs than I can count now, but I'm finally on a combination that work for me. It took months and months, but it was worth persevering. So I know it's really hard, but don't be scared to admit that it just isn't working, because that isn't to say that nothing will work for you.
I really hope you're feeling a bit better soon!