Woke up with swollen back of throat (top and middle). Hard to swallow & clear throat. Mouth breather. Don't feel sick? How can I make this go away.

Urgent Care or ER. This involve your Airway! You need prompt medical evaluation and treatment! It could worsen and become fatal. Get medical attention now please!
Throat. Although it sounds like silent acid reflux or dryness, you definitely should check this out today. Sometimes its allergic or a swollen uvula.