I'm the biggest skeptic in the world, but I have thought about that, too. Mainly because these nightmares are so persistant and realistic. Gawd, I hope not. I've heard of people having premonition dreams before, and I certainly don't want this one to come true.
What Fruit Bat said... exactly on the mark.
I would suggest you do your best to keep yourself and your hubby very safe for a while, Gemp. As Renee said, it might not necessarily be literal.. but I would not tempt fate. That dream (IMO) sounds far too much like something that could happen to you.
I've had those types of dreams before, where I wake up with a scream in the back of my throat and a face- and pillow-full of tears. Most of the time they are just dreams, but once it was not. I had a dream when I was very young about white and black vans, driving around, and they were very menacing. The dream had a completely different something to it, something that made the message stick. Later that year and I believe for a few years afterwards rapists in white or black school vans started hanging out on the street corners in my town, near the schools in the area. They abducted little girls.. many I believe were found days later, dead. Only in one incident did the kids escape. After several instances of this NO ONE and I mean NO ONE would let a van approach them. Kids would literally run screaming off the roads and into peoples' back yards if a van so much as slowed near them. Eventually the attacks stopped, or at least diminished.
My mother has also had precognition dreams before.. she can always tell them apart, as well. She's had them all her life. The second time she had one, she didn't heed the warning. She never did again... but those dreams have saved her life several times because she knew what to look for.