It sounds like you may have an infection or inflammation at the injection site, which needs prompt medical evaluation since painkillers are not helping and symptoms have persisted for 2 days.

⚠️ Urgent Actions to Take

• Seek immediate assessment by a doctor, preferably a specialist in infectious diseases or an orthopedic doctor, to examine the injection site.
• Avoid applying any creams or self-medicating further without professional advice.
• If you develop fever, spreading redness, increased swelling, or worsening pain, seek emergency care immediately.

🩺 What This Likely Means

Pain, redness, and swelling after an injection can indicate an infection such as cellulitis or an abscess, or a local inflammatory reaction. Since painkillers are ineffective, this suggests the issue may be more than simple inflammation.

🏥 Next Steps

• Visit a doctor promptly for physical examination and possibly wound culture or imaging if needed.
• You may require antibiotics or other treatments based on the doctor’s evaluation.
• Keep the area clean and avoid pressure or irritation on the site.

Please consult a doctor as soon as possible to prevent complications and get appropriate treatment. If symptoms worsen or you develop systemic signs like fever, go to emergency care immediately.To narrow down potential causes, we will need some more information.Please tell me your age and gender.