Miscarriage nightmares

I had a miscarriage early on in my last pregnancy (5 weeks), but was fortunate enough to immediately become pregnant again. For the first several weeks I was anxious and scared all the time, but now at 10 weeks I am actually really relaxed. I know that if I miscarried again, I have done everything in my power to have a healthy pregnancy and it just wasn't meant to be. I'm ODDLY relaxed about it. Its a good feeling. BUT I have been having nightmares reliving discovering that I was bleeding, and I wake up a hysterical mess believing it is true. Even when I realize it was a dream, I'm afraid to go to the bathroom, because I'm sure my brain was trying to prepare me. I have no reason to believe anything will go wrong, but I can't seem to work through my issues especially since during the day, I'm seemingly fine. does anyone have any advice for working through this trauma?