The Mind-Blowing Way Your Body Makes Room for Baby
"I am going to talk about the uterus and how it grows during pregnancy. So uteruses usually start out small. They look like pear shaped (upside down pear) and their weight [is in] in the pelvis.
So as the pregnancy grows around twelve weeks the uterus will be at the rim of the pelvis, and then it will start popping out. So before twelve weeks we aren't measuring much with the fundal height at the OB office.
Once you hit the belly button, you are at twenty weeks about then.
so this is about a sixteen week size.
Depending on your pelvis shape and your body shape size some women show earlier than others. So some women show as early as sixteen weeks and other women don't really show as much.
That doesn't mean anything is wrong. It just be the way your carry the baby.
So as you [grow] each week past twenty weeks, the rule is generally an inch per gestational age.
Measure it from the pelvic bone to the top of the uterus, should be for thirty-three weeks thirty-three centimeters.
Things that can throw that off...if you have a giant fibroid. Sometimes if you have more of a belly, it could be off.
That's why we use ultrasound to measure babies when we're not getting a good fundal height.
So this is a term uterus. Although to be honest, it would actually be bigger than this in real life.
You're gonna have the uterus way up here towards the chest. Some women carry far out and some women carry deeper in the pelvis. So not everybody is the same.
It's pretty amazing that we start in this little tiny fist shaped mole peris ball, and then we grow to this very big [watermelon].
Can you imagine if you had twins in there? Very big uterus!
I think it's pretty amazing."