paleasa,
Your post is a little confusing. Some patients with carpal tunnel syndrome (CTS) will have referred pain to the forearm or even up to the shoulder.
But, CTS does not directly cause pain in the forearm or upper arm.
So, to have continued upper arm pain after the hand pain, numbness, and tingling is gone, means that something else is going on.
You may have some other nerve compression. Possibly thoracic outlet syndrome, brachial plexus problem, or cervical nerve root compression.
You should have it checked out by a hand surgeon, orthopedic surgeon, or a physiatrist (specialist in PM&R - physical medicine and rehabilitation).
Good luck.