I feel pulsating in the right side of my head , no headache. what can that be?

Do you feel the pulsating inside your head or do you feel the pulsating when you feel the side of your head with your hand? If you are feeling it with your hand, you are likely feeling a blood vessel. See your doctor if you feel the pulsating inside your head-many possible diagnoses can cause this so your doctor will need to examine you to make a diagnosis and provide treatment. Good luck!

It may be nothing and irrelevant but cautiously you should have your blood pressure checked. Our body sometimes has certain transient symptom you cannot explain. Of course, you have to see a doctor if symptom persists.