I believe that I replied to your other post earlier this week. Still it bears repetition.
I totally agree with those above who said you need to concentrate on the good things, enjoy your life & the lives of your loved ones now so you won't have regrets later.
It does sound like a combination of stress/anxiety/depression & too much change. I lived with my now husband for a year prior to our marriage & I was 28 & thought all would stay the same (we also lived with my mother) but after we were married I went through a period that a friend (who was also a psychologist) later helped me see was me trying to somehow live up to totally unreal expectations of working, being a wife, daughter & doing everything "right" rather than just continuing as things were before we got a "marriage certificate"!!
My point is, that we sometimes respond to even minor "paperwork" changes in really way out stressed ways. You need to figure out what's set this off & then you'll probably find yourself laughing about it, as I did(i also felt pretty silly!!)
a couple of things that help stress are gentle 30minute walks between 6 & 7 am when the sunsrays (even if it's overcast) work to balance stress causing chemicals in our brains & eating foods high in tryptophan (it occurs naturally in lots of foods eg. Turkey, yoghurt, most nuts, alot of cheeses, pumpkin seeds etc etc).