Kezo sorry to go off subject but if CT scan shows nothing up is a MRI scan the next step ?
I’m certainly no doctor Mike and wouldn’t like to guess but a CT uses X rays and radio waves for a better quality than a standard Xray. Where Mri uses magnetic resonance imaging and radio waves as the name suggests. They are both used for different things, however an MRI is said to have a superior image quality
Other than that I know very little.