A 'sick headache' is a sign that you need to rest, slow down for a minute. I'm glad you recognize that and just let it be. This is how we take care of our mental and physical health. Knowing when to say when. We're not all wired for constant stress; some people can do it, most of us cannot. You are going to be great! You know the signs and the steps to take, and you're not beating yourself up.