I dream about twins all the time

It freaks me out. We just don't have room for 3!
I've had dreams that have come real though, like since I was 4 I dreamt about seeing a heart monitor and a man fading into the background then being brought back, well my grandad when I was 10 had that happen. The dreams stopped afterwards.
I also dreamt that my cat died in the exact same position that he actually did, a week before he was hit.
Now though I'm having dreams about our other cat that died a couple of weeks ago coming back to life. I don't think I'm that powerful in my dreams though