Dreaming of a Miscarriage

H?
I am approximately 6 weeks pregnant, and lately I've been having very vivid dreams. Usually they're silly or happy dreams, but the last two nights I've woken up sad. I keep dreaming that I go to sit down on the toilet to pee and I see bright red blood. 
I did have a miscarriage at 13 weeks back in March, so I'm not completely surprised by these dreams. However, they're so sad and stressful!
Anyone else experience Miscarriage dreams?