In some people, especially who are thin or have less body fat, do have visible pulsation of some vessels. Aging also predisposes for this phenomenon.
There is nothing abnormal in this. Your mentioned symptoms also, do not correlate with the finding. If you have family history of abnormal lipid profile (high cholesterol or triglycerides etc) and cerebrovascular accidents, you can get a colored doppler study of carotids.
This will clear doubts about anatomical and physiological dysfunctions like blockage due to atherosclerosis or aneurysm etc.
Please feel free to ask, if you need further inputs.
As a matter of fact there is no such artery in the neck called as jugular artery. There are jugular veins. The arteries are carotids. They do give visible pulsation in quite a fraction of population.
There is a small jugular branch in the base of skull entering into jugular foramen, deep deep down, which is very small and invisible.
Your investigation reports seem to be normal. Please remove your unfounded fear.
You are welcome for further queries.