Hi Sir/Madam Welcome to Health Care Magic I can certainly understand your concern about your sleeplessness,that loud pulsating sound could be due to some blolod vessel related problem, if it occurs again or persists, it is advisable to get an MRI done to rule out the vessel problem If the sound is like coming, it could be to months , related to ear problem, so observe that symptom. , I can find that you have difficulty with the maintenance of your sleep, so I would suggest you to start on benzodiazepines is clonazepam, to regulate your sleep, which is safe and effective Post your further questions if any, I will available to take up your follow up questions Thank you