I'd recommend discussing your findings with a healthcare professional once you've had your sleep test. They'll be able to provide you with the most accurate diagnosis and guide you on the best course of action.
As you see, sstress and anxiety can indeed have various effects on our bodies, including sleep disturbances. Recent changes in your stress levels may be contributing to your current experience.
In the meantime, you could consider relaxation techniques to help manage stress and anxiety. Also, you can try natural remedies, such as CBD. You can get a cannabis card for that from releaf.co.uk. Besides, breathing exercises and mindfulness practices might be helpful.
I use fluoride-free toothpaste. Is it harmful?