What are the odds that i could conceive twins?

twins use to run strong in my family. My great great grandmother had 6 sets of twins (she was a twin herself) but my great grandma was the last twin. Neither my grandmother nor mother had twins. Maybe the gene didnt pass on? Or could that gene lay dormant for a couple of generations? I keep having dreams about having twins and that 'feeling' that i will have twins next time i have a baby. I always had a feeling my first born was going to be a boy and preemie which turned out true. Im too afraid to have twins lol.