I know that 'state' of being. You describe it well. A kind of 'non existance'. Being in a place of nothingness. No feelings but just a consciousness of being. Detached but aware at the same time. A state of nothing. So unfamiliar you find yourself just waiting and wondering with no clue how to respond.

Trying to recall what I do during those states I think I try to go with the flow and not press myself to find a familiar symptom that I can 'treat'. Like most time of unbalance I take myself to my garden. To the arms of Mother Earth and the natural world. In some ways it is like experiencing a drug induced high of sorts that isn't really a high but it is a detachment from reality so it feels somewhat like a stone.

It may help to tell yourself that it will pass. You will care again. Feelings will come back. Maybe let yourself enjoy the break from over feeling everything. You will be okay. You are not likely to do much of anything let alone cause yourself harm. Take the day off and let it run its course. You may feel fuzy for a while when your mood shifts again. Just take it slow and easy. Maybe sleep if you can and if it starts to make you feel anxious or worried. Likely you won't but you will wonder why you don't.

You are not alone. You will be okay. I hope I offered something to reassure you. I think I know what you are dealing with and if it is like what I experience now and then it will pass. You may even envy this time when other times are in hypo or hyper mode. Take good care.