I'm experiencing something similar. It's challenging to recognize it. I told my husband the other day "I'm just so tired" (I recently experienced a more serious BP episode than I've had in a few years), he told me "honey, anytime anyone has asked you how you are, for awhile now you have responded with you are either 'tired' or 'exhausted'." I kept going until I hit a wall and did not feel like I could go anymore. It seems like it's easier to see a pattern or behaviors once it's past, or someone points it out to me. When I'm in it, forget it unless it's debilitating (which it definitely has been at times).