**Core Concept**
Fibroids are common benign tumors of the uterus that can cause various complications during pregnancy, including those related to the mother's health, the fetus's health, and the delivery process.

**Why the Correct Answer is Right**
The correct answer is not a complication of fibroid in pregnancy. The presence of fibroids during pregnancy can lead to preterm labor, placental abruption, fetal growth restriction, and postpartum hemorrhage due to the increased risk of uterine distension and vascular compression. Additionally, fibroids can cause pain, discomfort, and urinary symptoms in pregnant women.

**Why Each Wrong Option is Incorrect**
**Option A:** Preterm labor - This is a known complication of fibroids in pregnancy, as they can lead to uterine distension and vascular compression, causing preterm contractions.
**Option B:** Fetal growth restriction - Fibroids can compress the uterine arteries, reducing blood flow to the fetus and leading to growth restriction.
**Option C:** Postpartum hemorrhage - Fibroids can increase the risk of postpartum hemorrhage due to the increased risk of uterine distension and vascular compression.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that fibroids are a common finding in pregnant women, and their presence may require close monitoring and management to prevent complications.

**Correct Answer: D.**