I have read your query.
For celiac and whipples disease you should consult physicain.
you should take-
Pain relievers, over-the-counter pain relievers such as acetaminophen
(Tylenol, others), ibuprofen
Antidepressants like Duloxetine
But you should not take any medicine without prescription of doctor.
Avoid squatting and upstairs as much as you can.
Get x-ray of both knees standing AP view done and discus it with your doctor or send me the report. Only then your final management can be done.
I hope it helps.
You are welcome to ask further health related queries.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Let me know if you have any concerns.