first of all congratulations,
and you are doing just the right thing to avoid fall out, you are addressing it and processing, so that will really help,
It's horrible when a plan falls apart, and get replaced with a heap of stress,
anything that frightening will have an impact, so you are not being odd feeling it,
don't bottle anything up, crying a great release, as long as you have breaks in between sessions,
remember as well as the hormone issue, your body has a great deal of repair work to do, you are going to be tired with any of the individual things that are going on, put them all together and it would be a surprise if you didn't feel this way,
give yourself time, and a break, I wouldn't panic about PND yet, try to not stress about it, given what has just happened, I don't think what you describe is unexpected, it will pass.