I was hearing this throbbing/thumping early in the morning. Mine was not heartbeat related. Mine was like 123...4. 123...4. A Doc at the emergency room a month ago said i had fluid in my ear. Wasnt my main issue at the time. Then i started having dental/gum soreness. Then spread to soreness/pressure at my temple and then days later the thumping sound. Someone from another site suggested 1000 mg vitamin D and you know what...its better!! I think I had an ear infection and the D is healing it. Been taking high doses of C for a while now but the D seems to be whats working. Try it to see if it works for you. I felt a difference within the first hour.
Seems that both the responders and my doctor point to the ear here, and now I have further proof...it just completely went away about a week ago. Even after running up several flights of stairs I cannot hear my heart thump. My ears seemed clear but I have had occasional bits of stagger to the left, so maybe there was liquid there. Anyway after about 8 months it is totally gone, which is a relief. Thanks to the responders.
I have a constant noise in my heart 24/7. I was diagnosed as having too much carotid artery and what I hear is the blood rushing through the artery. The diagnosing doctor said he would blow off his head if he had the problem. My noise can be heard by others who place their ear to mine or by listening at any point on my head with a stethoscope. The surgery to repair the problem is life-threatening where the condition is not. I have just adopted the outlook that as long as I hear it, I'm still alive and kicking.
Ginger
I think it is associated with the ear. Yes, I have arrhythmias but my heart is fine. My left ear has had problems over the years. Sometimes it just hurts. Perhaps it's fluid in there that creates some kind of echo chamber. Even now I can hear/feel it thumping. I just know it's not a heart problem and it's not an ear infection. It just seems to be a byproduct of some past ear problems. Very odd.