Jenny32 with my limited knowledge, I would expect that it's the AF which is causing your fatigue because the heart is working so ineffectively. I went into permanent AF very unusually before I was 50. I felt dreadful, was on a number is drugs and couldn't work full time. DH took over all housework.
By incredibly happy fortune, a consultant I was referred to knew a surgeon in Middlesbro who'd just been taught a new technique to cure it. It was the minimally invasive MAZE, which does work best on people who haven't had AF for very long. He agreed to operate on me and I've not had AF since (12 years).
Another technique is pulmonary vein ablation, which is now quite a common operation.
Has anyone ever suggested a procedure rather than drugs? It might be worth asking the question.
German voters slide inexorably to common sense …


Like you, I tend to get stuff done in the mornings, and take it easy later in the day. You do start to feel your age, but I expect that's pretty normal. I enjoy playing bridge, rambles in the country (2 days in the week), and meeting up with friends for lunch or coffee. So far, no complaints!