Am I crazy?!

Not sure if this is normal or if I'm parnoid. But lately I've been having dreams of my husband leaving me while I'm pregnant to raise this baby on my own and these dreams feel so real so when I wake up I'm mad, hurt and heartbroken. And it's in the back of mind all day after I wake up. It's always been the biggest fear of mine to have to raise a baby on my own and have him not have his dad like how I was raised. Are dreams like this normal or am I crazy?