Last year I got sick with what I thought was the flu. After a month, I still wasn't feeling better. I noticed that when I bent over to pick something up, I would get shortness if breath. I also felt tired all the time and slept a lot. Then I noticed a pulsing in my left ear, which began to get louder and louder. It sounded like someone stomping on a hardwood floor in their socks. I could also feel my heart beating along with the pounding in my ear. I finally went to the emergency room and was diagnosed with severe anemia. The doctor told me if I hadn't come in when I did, I would have been dead in a couple of days. I had to have a blood transfusion, a colonoscopy, and an endoscopy. I had a slow leak somewhere, but they really didn't find much of anything. So, a year later, I am hearing a slight whooshing in my left ear...again. I hope it's nothing. I don't want to go through that nightmare again! So, it any of you experience those symptoms, get checked out for anemia. I am taking B12, C, Iron, Magnesium and D3. Good luck.