Sticking to daily plan and protocol when you feel run down

I made my plan for the day but then woke up tired, sluggish, on my period, headache, moody… just an overall feeling of run down. I ate my breakfast food but then skipped my agenda and went to get a massage. Then ate my lunch but ate leftover cake someone gave us after. Now instead of doing my afternoon agenda, I am taking a warm bath. I’m not sure how to feel about it. I want to just allow the feeling of run down to exist, but I can’t help feel disappointed in myself for not sticking to my plan. Perhaps this is where I just have to practice being uncomfortable and run down but doing my shit anyway. Thoughts?