6 sets of twins in my family

So there is 6 sets of twins on my side of the family starting with my great grandmother is a twin 3 of her sons had twins her nephew had a set of twins my moms brother had a set of twin the last two sets are both 13 years old now. So 13 years since the last twins. This is my 3rd pregnancy and I kinda want twins since this will be my last due to medical issues so if I could have twins that would be cool. I slipped and fell yesterday so went to ER due to cramping. I'm was 5.5 yesterday and my hcg was 12,108. I've looked at a chart and those numbers appear to be in normal singleton range. I guess I'm just trying to get opinions on my chances lol. My mom has 5 kids all singleton she has 7 siblings all of them have kids except 1 have they all have 1 or more kids and they were singleton except my uncle who is her only full sibling. Hope this isn't to confusing. And I know it only matters for the mothers side but my husbands half sister also had twins 13 years ago. I also conceived while breastfeeding which I read increases chances. Help me out sistas