Who had hidden twins?

Kayla

Twins run in my family. I'm a twin, my mother is one and my sister miscarried one of hers. I was a hidden twin who was a surprise untill the very end when my mom was in labor. How many of you women have had hidden twins? When did you find out. Iv only had one scan at 10 1/2 weeks. Another Tuesday I'll be 20 1/2 weeks.