Hello! I have been feeling fine for like 2 weeks now but I have had this weird problem for about 8 months. I can feel my pulse/heartbeat in my back and on the back of my head. It has been bothering me a lot but I still havent thought much about it. Well now I googled it and ofc I found scary answers about some blood stream blockage like a possible tumor in the brain area etc.. What else could cause this? I can't sleep on my back anymore :(