Since writing this I have been more conscious of my thoughts. The needing to suddenly sleep has lessened. It's more like it used to be where I will acknowledge feeling tied and than go lie down if needed. I did go through something similar several years ago and oddly enough it was after a move from one home to another. It's not like I feel physically tired, it's just an urgent thought that I need to sleep. And than I just curl up where ever I am and fall asleep. It is hard to fully explain but now that I am more consciously aware I will wait until I have gotten to a proper place to sleep before falling asleep. Thanks