There’ve been a few discussions about pain relief, and there’s some advice in the Newbies Guide ( ES Information- Treatment: Pain Relief )
Not sure what you’ve tried- there’s some medications which can help with nerve type pain, like Gabapentin, Neurontin, or Amitriptyline (which I take, it helps me) Sometimes it can take a while to experiment with different ones/ combinations to get pain relief. If none of that works, Snappleofdiscord suggested trying lidocaine patches which she stuck on the skin over the worst areas. Some people have tried acupuncture or seen a chiropractor although you need to be careful with that one as if they don’t understand ES they could even fracture the styloid.
For the first bite I don’t think there’s anything which helps with the pain… just a matter of being patient and hopefully it’ll go. If you find there’s certain foods which make it worse obviously it might be worth avoiding them…
Hope this helps a bit.