Guide | Fetal Movement: From Butterfly Flutters to Strong Kicks Throughout Pregnancy
First feeling the fetus gently kick is one of pregnancy’s most exciting and emotionally significant moments. Fetal movement is a tangible sign of growth and an important indicator of well-being during pregnancy. Written by health reporter Stephanie Watson and reviewed by Dr. Brunilda Nazario and Dr. Elmer Huerta, this article explains when movement begins, what it feels like, how often it occurs, and whether to monitor it.
When does fetal movement begin?
Most pregnant women first feel fetal movement between weeks 16 and 25. In a first pregnancy, kicks may not be noticed until weeks 25 to 30. Women who have been pregnant before may detect movement around week 13.
Movement is easier to feel while sitting or lying quietly. A relaxed expectant mother may notice subtle movement in the uterus more readily.
What does it feel like?
Early movement is often described as butterfly flutters, twitching, or a rolling feeling in the abdomen. During a first pregnancy, it may be confused with gas, hunger, or muscle spasms.
Movement gradually strengthens in the second and third trimesters and may feel like distinct kicks, taps, or stretching. Fetuses are often more active between 9 p.m. and 1 a.m., which is closely related to changes in maternal blood sugar.
Frequency increases toward term
Movement is usually infrequent early in pregnancy but becomes more regular as the fetus develops, especially late in the second trimester and during the third. Research suggests a fetus may move about 30 times per hour in the third trimester.
Sound, light, and touch may also trigger a response. A fetus may even “reply” with a gentle kick when the expectant father comes close.
Should movement be monitored? Physicians suggest starting at 28 weeks
Once movement becomes regular, often around week 28, many obstetricians recommend recording it through “kick counting” or fetal movement monitoring.
Monitoring may help identify potential concerns. Contact a physician immediately if movement decreases significantly. Even in multiple pregnancies, where it can be difficult to identify which fetus is moving, physicians recommend tracking movement as well as possible.
The best time to count is after a meal, when the fetus is usually more active. Sit or lie on the left side to support placental blood flow, and use a notebook or app to track daily patterns.
What if you cannot feel movement?
If you are under 30 weeks and have not clearly felt movement or are unsure what you felt, do not be overly concerned. Fetuses have sleep cycles with less activity. As the fetus grows and uterine space becomes limited, the range of movement may decrease, but movement should still occur daily.
Contact a healthcare facility promptly if movement clearly decreases or is almost absent for an entire day.
Fetal movement timeline:
Week 12: The fetus begins moving, but movement is usually not felt.
Week 16: Light butterfly-like fluttering may be felt.
Week 20: Movement is first clearly felt by many first-time mothers.
Week 24: Movement is clear, and fetal hiccups may cause small abdominal jumps.
Week 28: Movement is frequent and strong.
Week 36: Limited space reduces movement but increases its strength. Seek medical care if there is no movement.
Guide | Fetal Movement: From Butterfly Flutters to Strong Kicks Throughout Pregnancy
Guide | Fetal Movement: From Butterfly Flutters to Strong Kicks Throughout Pregnancy
First feeling the fetus gently kick is one of pregnancy’s most exciting and emotionally significant moments. Fetal movement is a tangible sign of growth and an important indicator of well-being during pregnancy. Written by health reporter Stephanie Watson and reviewed by Dr. Brunilda Nazario and Dr. Elmer Huerta, this article explains when movement begins, what it feels like, how often it occurs, and whether to monitor it.
When does fetal movement begin?
Most pregnant women first feel fetal movement between weeks 16 and 25. In a first pregnancy, kicks may not be noticed until weeks 25 to 30. Women who have been pregnant before may detect movement around week 13.
Movement is easier to feel while sitting or lying quietly. A relaxed expectant mother may notice subtle movement in the uterus more readily.
What does it feel like?
Early movement is often described as butterfly flutters, twitching, or a rolling feeling in the abdomen. During a first pregnancy, it may be confused with gas, hunger, or muscle spasms.
Movement gradually strengthens in the second and third trimesters and may feel like distinct kicks, taps, or stretching. Fetuses are often more active between 9 p.m. and 1 a.m., which is closely related to changes in maternal blood sugar.
Frequency increases toward term
Movement is usually infrequent early in pregnancy but becomes more regular as the fetus develops, especially late in the second trimester and during the third. Research suggests a fetus may move about 30 times per hour in the third trimester.
Sound, light, and touch may also trigger a response. A fetus may even “reply” with a gentle kick when the expectant father comes close.
Should movement be monitored? Physicians suggest starting at 28 weeks
Once movement becomes regular, often around week 28, many obstetricians recommend recording it through “kick counting” or fetal movement monitoring.
Monitoring may help identify potential concerns. Contact a physician immediately if movement decreases significantly. Even in multiple pregnancies, where it can be difficult to identify which fetus is moving, physicians recommend tracking movement as well as possible.
The best time to count is after a meal, when the fetus is usually more active. Sit or lie on the left side to support placental blood flow, and use a notebook or app to track daily patterns.
What if you cannot feel movement?
If you are under 30 weeks and have not clearly felt movement or are unsure what you felt, do not be overly concerned. Fetuses have sleep cycles with less activity. As the fetus grows and uterine space becomes limited, the range of movement may decrease, but movement should still occur daily.
Contact a healthcare facility promptly if movement clearly decreases or is almost absent for an entire day.
Fetal movement timeline:
Week 12: The fetus begins moving, but movement is usually not felt.
Week 16: Light butterfly-like fluttering may be felt.
Week 20: Movement is first clearly felt by many first-time mothers.
Week 24: Movement is clear, and fetal hiccups may cause small abdominal jumps.
Week 28: Movement is frequent and strong.
Week 36: Limited space reduces movement but increases its strength. Seek medical care if there is no movement.
Source:
Collected online