Why Would Fundal Height Decrease?
If your fundal height is smaller than expected, it may be because: Your baby is smaller than expected. You don't have enough amniotic fluid. Your baby's growth is being restricted.
Can baby position affect fundal height?
This may make your bump appear smaller, even if your baby is the right size. The position your baby's lying in, and your own height, shape and tummy muscles can all affect the measurement too.
My baby is small for dates. Is something wrong? - BabyCentre UK
Can fundal height change due date?
Causes of Changing a Due Date Fundal height: The fundus (top of the uterus) might measure differently than expected based on your predicted due date.
When Your Doctor Changes Your Pregnancy Due Date
Can fundal height fluctuate?
A text book fundal height is supposed to equal the same amount of weeks as the pregnancy. For example, 24 weeks pregnant equal 24 cm and so forth (up until about 36 to 37 weeks). However, fundal height measurements can fluctuate 2 to 4 cm higher or lower than the expected norm.
Feeling/measuring your belly, listening to baby - Dr Emeil Kamel
Can your fundal height be wrong?
Measuring bigger or smaller than the average is usually perfectly normal. In fact, research suggests fundal height measurements are often off by two weeks in non-obese women. There's always a margin of error when it comes to estimating the exact weight and size of an unborn baby.
Fundal Height and Measuring Your Baby's Size in Utero