Placental calcification?

Joanna
Anyone else have any experiences with this? I'm 36 weeks... Never smoked (before or during pregnancy), my blood pressure has been great the whole time, and I don't have GD. It's been a very healthy and comfortable pregnancy so far! My baby moves all day long and gives me really solid kicks. The heart rate also has been consistently between 130 and 150 at every appointment. And baby is in the 84th percentile for growth, so... Not little!
 I'm just looking for some other mamas that have experienced this before. When did your doctor notice the calcification? How many weeks were you when you went into labor? My doctor wouldn't tell me much about it! She just said its not normally seen this early but lovely Dr. Google says it's pretty normal at 37 weeks and I'm almost there... Help ease my mind please!