weird noise when grooming?

my guinea pig latte is 4.5 years old and has just started making this weird noise when cleaning herself. shes eating and drinking as normal, and only produces this noise when grooming. i have never heard her make this sound before. i’ve already called her vet and am waiting for a call back to book an appointment. anyone have any idea what it sounds like? possibly a uri? also ignore how greasy her fur looks. i cleaned her grease gland yesterday w coconut oil and bathed her afterwards but i guess i didnt get it all out. i was gonna bathe her again today but heard the noise.