My son( 6 yrs old.) woke up with a swollen throat, I noticed he couldn't sleep last nite, he woke up to clear his throat a few times, and when he did it wasn't easy, and he sounded like he was wedding because of the phlegm. When I looked in his throat, his gums were swollen, his back thoat was red, and swollen, and has bloody light patches on each side, and hes also saying it feels like a lump is in the back when he swollows, his voice sounds tight, and hoarsish. Could it be strep, or layngitis?