Hello and hope you are doing well.
Its unlikely to be Quinsy
, which is peritonsillar abscess
that is there is pus collection around the tonsils. This is an emergency and needs to be treated with IV antibiotics. It could most probably be tonsillitis and a throat infection. Throat pain, difficulty swallowing, fever, scratchiness in the throat, post nasal drip, malaise and loss of appetite are symptoms of tonsillitis.
White patches are common in many throat infections.