Yes, but I had a low thyroid. My hair was falling out and I was tired all the time, and the test showed a low thyroid. My test results now, while on a low dose of levothyroxine, is within the normal range. But, she says quit it anyway. Last night though I was watching TV in my recliner and dozed off. I was awakened suddenly choking because I could not breathe. This has happened before. I think I have sleep apnea. It all makes sense--tired all day (I wake up tired most mornings--it's a rare day when I don't), pounding heart in the middle of the night or just after falling asleep (like my heart isn't getting enough oxygen), sometimes have morning headaches, coughing a lot despite not having a cold in a year. I finally got an appointment with a cardiologist, but it's not until May 3rd, and that's only the beginning of figuring out why, so this could go on a while before I get an answer. In the meantime, I have to stay on Eliquis to prevent a stroke I guess. Long journey. Thanks for all your ideas on what is going on. It could be all the above, that everything is intertwined.