@Princessxharris - I’ve annotated several of your images & will comment on what I see below each picture, but first, this is very concerning -
Has this ever happened again? I’m asking because that sort of symptom can point to irritation or compression of the internal/external carotid artery either by your styloid(s), calcified stylohyoid ligament(s) or the greater horn(s) of your hyoid bone. Since your hyoid bone is pretty unusual as @Jules commented, it could be involved in that experience. Another option is the sections of stylohyoid ligament calcification are also contributors to carotid irritation.
In this panoramic x-ray from 2015 your styloids were already elongated. They’re circled in pink.
In this image, you can see there’s a decent amount of space between the transverse process of C1 & your styloid process which bodes well for no IJV compression with your head in that position, however, with neck flexion, it’s possible the styloid could squash your IJV against C1.
In this image, the pink line shows you’ve completely lost the lordotic curve in your cervical spine. That brings the styloid into closer contact w/ local nerves & blood vessels. The lordotic curve can be restored w/ time & patience by doing gentle PT exercises. This excellent discussion addresses cervical lordotic curve - List of my favourite resources on YouTube to learn anatomy
Another thing that stands out is that the right greater horn of your hyoid is actually fused to the calcification in your thyroid cartilage. This would serve to tether your hyoid bone on the right side which would be a contributor to the clicking in your throat & likely some of your other neck & throat symptoms.
This image shows the right greater horn/thyroid cartilage fusion from the front & also shows that same problem is not occurring on the left side.
Because we’re not doctors, what we note in imaging can only be used for discussion when you see your medical specialist. We don’t consider it diagnostic in any way.