Sorry to hear that.
Unless you have an underlying health condition then rest, lots of fluids and 4 hourly pain relief is usually as good as anything. If it becomes a sever infection antibiotics might (might!) help.
You should be able to call your GP surgery or if you get really concerned 111.
The pain is horrible and can be really uncomfortable. Gargling with a weak solution of TCP can help numb the back of the throat and also helps fight the infection. Its good stuff.
As regards pain relief - other than 4 hourly paracetamol - you can take a more aggressive approach if the pain becomes really bad again dependent upon whether you have any underlying health problems. Alternating Aspirin and Paracetamol every 2 hours can be very effective. Obviously if you have gastro intestinal problems or are on other meds you need to be careful with this and you should not exceed the stated maximum doses over a 24hr period.
Also - if you can get dispersible or soluble Aspirin and Paracetamol then you can gargle before swallowing. This can have a local anaesthetic effect which may help also.
Feel free to PM if that would help.
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Diagnosed: ASD, hEDS, MCAS, ARFID
Retired specialist neurodevelopmental clinician
Member of Autistic & LGBTQ+ communities in South West UK
Trustee at Cornwall Pride charity & Coordinator at Kernow Neurodivergent Artists network