Maybe it gos up and down... Another thing is I've been told was that my blood pressure was low in the past. I haven't had it checked in a long time. Maybe it rings when it returns to normal or shifts... A lot of weird thing go on in the world and with people... Maybe it's true that when you're a 'starseed' it's normal to have ringing in the ears, every now and then... They(aliens, guides or angels) are trying to communicate with you. Also, one of the symptoms of being a 'starseed' is low blood pressure.