I get ear nose and throat problems once a month, what can it be?

Hi I get ear nose and throat problems once a month I start with ear and throat pain and then I feel like I have trapped liquid and get itchiness and at the same time I get nasal congestion and watery nose after a few days with those symptom I get sore swollen bright red tonsils with white sores and tonsil stones Im so confused and I dont know what it can be since I have so many symptoms at once and it has been going on for about 6 months

Age: 24
Female
Medications: N/A