OP, how long have you been on Sertraline? I did many years on it, I did find clenching my jaw and a dry mouth to be my side effects, but otherwise it was great for any anxiety. My point being if Sertraline is newer to you (less than 6 weeks) then it’s worth sticking it or increasing your dose before changing ADs. If that doesn’t help then yes, a change in AD is next. Unfortunately they are trial and error and there is no one size fits all. :(
As regards to mental health services... as you say they’re overwhelmed and under funded, which is not our fault, but just means getting any kind of care or support is bloody hard work, and at a time when we can cope with that the least. Have you considered going private? You can work with them to discuss treatment options and medication and with a letter to your GP you can then have the prescriptions through your surgery as normal. I had a consult and a follow up 6 months later, I didn’t have to keep paying for regular appointments.
Do you have a support network, a partner or family and friends that can be there for you? Just having one person that can be at the end of a phone can help so much.
Have you tried any therapy? Again, I know this is an utter ballache to get through the NHS, but if you don’t have the means to private there are some places that will take you on at reduced rates if you’re not working or don’t have the means to pay the full whack. Of course that will depend on where you live too.
As far as opening up to new people, I totally get you! I was lucky enough to get some therapy from the NHS. I spent the first couple of sessions skirting questions and not saying very much at all, they’re used to this. Very few people will wander in to them and happily give up all their issues in the first go, and any half decent therapist knows this.
I’m sure you already know this, but if you are ever in crisis please go to your local A&E.
You have a community here that will always listen, and there are other online communities specifically for mental health problems. Sometimes knowing someone is there that you can spew your guts to really helps. It gives you a place to put your feelings, be listened to and feel validated.
I don’t wish any of that to sound trite, because you are absolutely right, you deserve better care now when you need it the most. I’m just trying to help with options that might ‘keep you afloat’ until you can get the right medication and proper support from your health service. x