Dr. Hanif warmly Welcomes you! Thanks for consulting at my virtual clinic. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concerns.   Apply Rub:A535 Arnica Gel Cream 4 times a day. It s a best natural remedy and is effective enough to help you relieve symptomatically. Plus add Ibuprofen800mg twice daily for pain. It seems to be due to joint space infection and needs urgent care. Fix an appointment with your Orthopaedic Surgeon who will examine you physically. If there is really some exudative fluid accumulation due to infection, the surgeon will aspirate with a syringe and you will be alright very soon. He may prescribe you antibiotics according to culture and the aspirated fluid analysis, and finding out the causative pathogen for the disease. Plus he may add Corticosteroid oral. Keep a good hydration and start topical treatment aforementioned. Hope it helps. If you need further, detailed and quick assistance related to any health issues in future, feel free to ask me a question directly from my profile. Have a wonderful time ahead.   Best Regards! DR. MUHAMMAD M. HANIF USA