Hi J.! Another pregnant mom who can't sleep, huh? I am in my first trimester, and I can't sleep too!
First, so sorry that you had that awful experience. I have never miscarried, but I work in the medical field and am very familiar with hydrops and with late miscarriages, like what you had. I understand that it is very traumatizing. Of course you are concerned with pregnancy! How could you not be, after what happened to you before?
Of course you don't want to feel this way, but, since you do, that is your body's way of telling you that you need to feel this way for now in order to heal from your trauma. And the end of my pregnancy, I really don't want to labor for day and half in excruciting pain, but my body tells me this is what I must do in order to receive the blessing that comes on the other end, my chlild. This is sort of the same thing. Remember that is IS OK to feel this way, so permit yourself to feel what you feel. You are NOT being unreasonable, you are a human being that went through a serious trauma and are still grieving that terrible loss. At the same time, perhaps you may be feeling guilty for feeling that way, and also inexplicably feeling guilty if you are also happy or content for a brief period of time.
Allow yourself to be both, and forget about whether it makes sense or not. Forget about what other people tell you. No matter how well intentioned when someone says "you should be happy!" or something like that, they are not understanding what you went through, what a serious trauma that was to you. Forget them. Allow yourself to worry, be afraid, to feel sad, to feel guilty, whatever, and to also be happy. It is perfectly all right to feel all these things at once. If you believe in God, pray to him and ask for calmness in your heart as much as you can. But don't hold back your emotions...in order for full healing to occur, you must allow yourself to fully indulge in your emotions right now.
Good luck! Did you have your late night snack yet? I did, but I am hungry again! Oh, pregnancy.....