Have you tried burning sage in the room? Take baths in salts (epsom salt is good) and say prayers. Also, listen to music that you like. Something that puts you in a calm state. Fights are won by the one who is calmest, most of the time. Don't be afraid, and don't have negative thoughts or feelings- this is stuff that it will feed off of. Sounds like you've got some primordial ooze stuck to you. Try guided imagery as well. Imagine it being washed away when you are in the shower, falling into the drain. Imagine white light and energy coming in through the top of your head, burning it but not you. Imagine the white light spreading through your entire body and making it glow with good energy.
Also, you can try taking a walk in the rain in the forest during the summer. The freshness and purity should get rid of it no problem.
Also, you can try taking a walk in the rain in the forest during the summer. The freshness and purity should get rid of it no problem.