You make perfect sense to me and I have had those periods also.

I believe your increased hypervigilance and sense of wariness about being prepared "just in case" is classic PTSD stemming from the extra stress of your work plans changing and from holding back your emotions: that blockage puts a strain on us and it's easier to get defensive and overwhelmed while we do it, so our safety system goes on alert.

You will stop crying, though. I know it's probably crazy-difficult to believe that, as I've been SO sure I wouldn't either, but we inevitably do.

My advice: take good care of yourself and get all the support you can. I surely hope things smooth out for you soon. Making myself safer is usually the best way to get my emotions flowing again.