I am suffering from a rapid pulsing/thumping sound in my right ear. it began 4 weeks ago, initially just a couple of times at night, but now constant?

How rapid vs. pulse: rate? Though rare to be this, it could reflect major cardiovascular disease in your middle cerebral artery; one portion located just deep to the middle ear cavity, next to the cochlea. If the RATE & timing matches the pulse in you neck (carotid artery), it could reflect a complication of artery ds. & be a warning sign of an impending major stroke. Study my answers & seek help worthy of your trust.