ok..I had my twins at 18 and I did a lot of reading on twins and heres some interesting things about your odds of having twins
You'll increase your odds of having twins/multiples if....
You (the mother) are over age 45. The chances of having twins increases with age; 17% of mothers over the age of 45 give birth to twins. Becoming a mother after age 50 boosts your odds considerably, to nearly 1 in 9!
You live in Massachusetts or Connecticut. A 1999 study found that rates in these states were at least 25% higher than the national rate in the United States.
You take fertility drugs or undergo other fertility treatments. No one can deny that the availability of fertility enhancements has increased the multiple birth rate, but no study seems to conclusively pinpoint the impact. Some estimate that the chances of having twins after fertility enhancing treatment is as high as 1 in 38. Others estimate that using the drug Clomid increases your chances to 1 in 5.
You, your mother, or her mother's mother is a fraternal twin. These women may carry a gene for hyperovulation, which means they release more than one egg during an ovulation cycle, increasing their ability to conceive fraternal twins. The chances may be high as 1 in 17 if the mother is a fraternal twin herself.
~~~this is scary to think about for me lol~~~
You've already had one set of fraternal twins. For mothers who have already had one set of fraternal twins, their chances of conceiving another set are four times greater than the average woman, or about 1 in 12!
You're Nigerian. This African country purportedly has the highest twinning rate in the world, estimated at 1 in 22. Some sources attribute it to their consumption of large quantities of YAMS. (It's worth a try if you really want to have multiples!)
You're overweight or tall. A 2005 study published by the American College of Obstetrics and Gynecology reported a significant increase in fraternal twin births to mothers who had a BMI of 30 or higher, or who were in the top 25th percentile for height.
~~~this too--im like 5'10 which is tall i guess~~~
IF you are wanting to have identical twins good luck...your odds are 1 in 285 regardless of race, heredity, age, and all other factors.
Hope this helped