One baby or Two: 17 Weeks

I had my second midwife appt. on Friday. A good note was that my blood pressure was 120/70, PERFECT! So i bought myself another month without thinking about blood pressure medicine. On a crazy note, my midwife found that i'm measuring rather large for 17 weeks, so she ordered an ultrasound for Thursday at 12:00 to check on the due date, and measurment of baby. As some of you know, while we were home we got on the topic of twins. Both Ryan's parents have twins on their families, and on my mother's side there are twins. I'm praying that this baby is just going to be big, instead of two babies! YIKES! I can't imagine having 3 carseats, having to get another crib, and lots of diapers! OMG! Braven knows where the baby is, and kisses the baby often throughout the day.