Your story mirrors mine in part. I was dx 5 years ago but had anxiety and constant exhaustion before that. The anxiety has taken the form of constant fear and after rejecting 2 anti anxiety drugs I was finally put on Sertraline this summer. I take 100 mg daily. I ve had slight stomach rumbling and sleepiness but they ve now gone and, although it didn t really kick in for about 3 months, I m so glad I persevered as my anxiety is a lot less than it was. Bottom line is that you can t replace lost brain chemicals with talking therapy. I tried for a long time but it didn t work. Sertraline lets you hang on to the serotonin lost in PD.
hope that helps a bit but I would say from my experience that Sertraline has helped me as much ,if not more, than levodopa drugs. Don t let the anxiety cripple you which is what it did to me this summer. I didn t go out for several weeks! I'm sure there is medication that can help you and I hope you will feel better soon. The helpline is an excellent source of info and advice if you want to talk things through with someone who has time to listen.
all best wishes