What Causes Pulsating Sensation In The Temple?

having pulsating on both temples for over a year. been dx with low blood pressure. and have elevated BP at time. was given medication to treat low ended up 2x in ER and my BP was high. FOr the the 6 years i feEL like i was going to pass out and felt unbalanced at timeS. went through CT scan MRI all normal. i notice my periods changed around then time too. been documenting my BP reading and all normal they have me on Bylsoic 5mg when B/P is greater than 120/80 . i only feel pulsating up to 1 wk before period and 2-3 days after period. i m keep on telling the cardiologist that I think its perimenopause sx. so today i finally got rx for premain phase to see if this helps.