You can ask a pharmacist to evaluate you.
After which they can share ways of relieving the pain and discomfort of a sore throat, such as:
- Paracetamol or ibuprofen.
 - Medicated lozenges containing a local anaesthetic, antiseptic, or anti-inflammatory medicine.
 - Anaesthetic spray (although there's little proof they help).
 
A pharmacist can also provide other treatments if you need them, without you seeing a GP.