Thanks for posting your query.
As there is no correlation between pea sized bone deposits and your other problems.
This is possible only when this pea sized bone is cancerous nature and spread to brain.
Have you undergone for CT/ MRI scan of brain?
Do you have any fever
You may have meningitis
(if fever is absent). You should consult with physician and neurologist
for detail check up.
Get well soon.
Dr. Mayank Bhargava