I'm a 72 year old single woman. For the past year I've been under a lot of stress and by last Friday it was terrible. I started feeling fatigued over the weekend and Monday morning I awoke with a headache (which went away when I took Advil) and very light-headed, off balance and my head felt "heavy". I sometimes get mild palpitations that last for a few minutes. I do breathing exercises and take a low dose Xanax when needed. The symptoms continue through today except for the headache. I have no energy and can't do much of anything. I feel better when I'm in my recliner where I can relax. I've always been able to get through bad days but this time it's knocked me for a loop. Could this just be anxiety????