Sudden problem with turntable


I have a rega p5 with a ortofon black. it used to sound great. yesterday i put on a record and it sounded terrible, really muddy. My knowledge of turntables is very limited. Is it possible that i damaged the stylus? Any suggestions as to how i would determine what happened?
jkontuly
Do you regularly clean the stylus on your cartridge?

Have you looked under magnification to see if it is clean or dirty?
Buy a box of Mr. Muscle Magic Eraser. (seriously). Lower the stylus onto the block. Raise it. Lower it, raise it. All set.
Do not drag it over stylus. Ever.
Mr Clean Magic Eraser. Search threads here and you will find one on how to use it.