Twin development at week 26 Your babies are growing fast. They’ll soon be 9 inches from crown to rump and weigh in at around 2 pounds each. Consider singing or reading books to your little ones. Their hearing is getting better, and they might even recognize your voice.

If you’re 26 weeks pregnant, you’re in month 6 of your pregnancy. Only 3 months left to go!

Most first-time moms of twins don’t feel fetal movement, or quickening, until 18 to 20 weeks — about the same average for singletons. (That said, if this is your second or later pregnancy, you’re more likely to feel the flutterings faster.)

Week 26 (24 weeks from conception) Weight, nearly 2 pounds. Fetal development milestones: Fingernails are fully developed. Eyelashes are forming and scalp hair continues to grow.

You can even figure out which twin is moving once the pregnancy reaches the point where movement around the uterus is nearly impossible. If both twins are head down so one has to deal with four legs pounding in the same spots all the time because once they turned head down there was no moving them around.

According to the March of Dimes, close to 60 percent of all twins and more than 90 percent of triplets are born prematurely (before 37 weeks). The average twin pregnancy lasts 35 weeks. Triplet pregnancies average 33 weeks, and quad pregnancies average 29 weeks.

Pre-term (or early) labor resulting in premature births. A typical, single pregnancy lasts about 40 weeks, but a twin pregnancy often lasts between 35 to 37 weeks.

By 26 weeks pregnant, you’ve probably gained about 16 to 22 pounds—or about 27 to 42 pounds if you’re 26 weeks pregnant with twins. When you touch your 26 weeks pregnant belly, you’ll notice the top of your uterus is about 2.5 inches above your belly button. Your belly will keep growing about a half inch each week for the rest of your pregnancy.

At 26 weeks pregnant, baby is as big as a head of kale. Your 26-week fetus measures about 14 inches and weighs about 1.7 pounds.