you will need to see your medical provider so you can be properly examined. your vague description of a "thing hanging beside the uvula" is really not sufficient for me to even guess as to the nature of this finding.
i have some inflammation in my tonsils but i also have a thing hanging beside my uvula that's never been there before. it hurts to yawn or stretch the muscles in my throat. it feels like my throat is constantly dry like i'm swallowing sandpaper.