I have crazy bad dust mite allergy. Had it tested and my skin prick had a reaction going all the way up my arm.
I woke up every morning feeling terrible. Since then I made the following changes that have completely changed everything.
1) Got a robot Vacuum with hepa filter that cleans under the bed
2) Got dust mite covers for my pillow etc
3) Got a Hepa filter that runs constantly for both my furnace and my room
4) Installed a dehumidifier that lowers the humidity in the entire house. Dust mites loooove humidity above 50 percent.
Now I wake up feeling pretty decent everyday