No, it really hasn’t. I developed my own habits to fight my stutter. But it did help me with my anxiety. If you’ve only been on it for a few weeks that could explain it. If not I’d talk to your doctor/psychiatrist about it. Perhaps upping the dosage or switching to another medication would suite you a lot better. I know a lot of people who have tried a bunch of anti anxiety medications until they found one that works for them. Talk to your provider about it. I guarantee you there is one that works, and will improve your anxiety. Whether it’s more sertraline or another anti anxiety medicine.