Twin possibilities ?

Ga

Hi mommas 💓 , so twins run in my moms side of the family my grandfathers brother and sister are twins on my moms side , and my grandma on moms side had a miscarriage of twins . My mom did not have twins , I was wondering what the chances of me or my sister having twins are . Also I ordered casava supplements and will be taking them every day I am already five weeks and will get an ultrasound in a few weeks... Thoughts? opinions ? 💕