what happens during the 12th week of pregnancy
12 Weeks Pregnant â Your Baby. When youâre 12 weeks pregnant, your babyâs sex organs are distinguishable, but still incomplete. Distinguishing the sex of your baby via ultrasound in the first trimester may be inaccurate.Your babyâs eyes are almost in the correct position in relation to its head, as are its ears.etween 11-13 weeks of your pregnancy, you may have decide to have an ultrasound to check on babyâs growth and development. You may get to see baby this week! During the ultrasound, the sonographer will measure baby and confirm your due date, plus or minus seven days.