Hi, Thanks for using HCM.
Your symptoms mostly suggest viral infection.
I usually treat my patients with multi-vitamin tablets and NSAID analgesic
. Take plenty of fluids with electrol powder and calcium supplements
You need blood tests like complete hemogram and X-ray of knee to rule out any other problem and osteoarthrites.
Regular exercise and healthy nutritious food, more of fruits and vegetables in your diet and maintain normal body weight.
Hope this will help you. Consult your doctor for further examination and management.
Feel free to ask me if you have any further queries.
Wish you good health. Take care.