I have woken up with a swollen left cheek. my lips are numb and the gun area on the inside is sensitive to the touch.

Go to Urgent Care: Symptoms such as this should be evaluated promptly. I wonder 'what' might have happened to you yesterday that could possibly affect that side? I wonder too if you've been under significant stress. One of my considerations would be early shingles- so for that reason I would want you to be seen. If it is shingles, you can get antiviral treatment to stop it. There are of course other causes so see MD