Do i have a high chance of conceiving multiples

Patient: Ive had 5 children. one of which had four amniotic sacs but one birth,another pregnancy two amniotic sacs and one birth. what does this mean do i have a higher chance of conceiving multiples?my grandmother had 2pair of twins, my mom had one but miscarried, my younger sister has two pair of fraternal twins. I guess it runs in my side of the family, also my husbands side, his grandmother.