If you are having stuffy nose issues yes see your doctor, But I have the same issues and I use the breathe strips extra and they work wonderfully. I have severe anxiety and sleep issues myself. I do take xanax but still have problems. But I do go for 20 minute walks after dinner and it does help with my sleep...might give that a try.
If your nose remains stuffy for more than 2 weeks I would see your doctor about it. If your doctor can't help, then see an ENT doctor. You need to breathe well through your nose for you to sleep well, since nasal congestion can aggravate tongue collapse, leading to less efficient sleep, and increased anxiety issues and fatigue.