Thank you, sorry you went through that. It is so frustrating when you know something is wrong but can't find any cause of it. My daughter was talking to friends of hers who are nurses and she explained what I experience, they all said it sounded like a sudden drop in blood pressure. I just had an appt. with my cardiologist who said that they were most likely right and suggested I start taking my blood pressure meds at night. I recently had surgery for AFib, both and ablation and watchman.
I am always amazed that nurses can tell you what doctors can't. Sometimes I think doctors don't take women seriously. I have been experiencing fatigue for a long time before the AFib was found. It actually took my grandson who is an athletic trainer to tell me what I had, after that I mentioned it to my doctor, and he came to the conclusion after tests that is exactly what I had.