Everyone has dream signs I think, it might just take a while to recongnise them in your dreams. You dream every night, you should try to set an alarm for the middel of the night you'll wake up and might rememeber something of a dream you just had, then write that down. Recall is just practise it gets better in time and then you'll be able to see your dream signs, I didn't know mine after just a few.

Good Luck