At 38 weeks, most babies respond to a few simple tricks: drinking something cold and sweet, changing your position, or making noise near your belly. These work because your baby reacts to temperature changes, spikes in blood sugar, and sound. If you’re trying to feel movement for reassurance or to complete a kick count, start with the methods below. But if you’ve noticed a genuine decrease in how much your baby moves throughout the day, contact your maternity unit right away rather than trying to stimulate movement at home.
Why Movement Feels Different at 38 Weeks
Your baby is running out of room. At this stage, the type of movement shifts noticeably. You’ll feel more rolls, stretches, and pushing against your ribs or pelvis, and fewer of the sharp kicks you felt earlier. Many people mistake this change for reduced movement, but the total number of movements per day should stay roughly the same. What changes is the quality, not the quantity.
Babies at this stage also have more defined sleep-wake cycles, typically sleeping in stretches of 20 to 40 minutes. If your baby seems still, you may simply be catching them during a nap. Giving it a bit of time and then trying one of the techniques below usually does the trick.
Cold, Sweet Drinks Work Fastest
The most reliable way to get a response is to drink a glass of cold orange juice or cold milk. This combines two stimuli at once: the sugar raises your blood glucose, which crosses the placenta and gives your baby a short burst of energy, and the cold temperature provides a sensory jolt. Research published in the American Journal of Obstetrics & Gynecology confirmed that a rise in maternal glucose causes a measurable, short-term increase in fetal activity.
If you don’t have juice, any cold, sugary drink or a quick snack like fruit, crackers, or a handful of nuts can help. The key is getting calories into your system. Many people notice movement picking up within 15 to 30 minutes of eating or drinking.
Change Your Position
Lying on your left side is the single best position for feeling your baby move. When you lie on your back in late pregnancy, the weight of your uterus compresses the major blood vessels that supply the placenta. This reduces oxygen flow to the baby, and studies show babies become less active and show changes in heart rate patterns when their mother is on her back. Rolling onto your left side relieves that pressure, improves blood flow, and often prompts your baby to start shifting around.
If you’ve been sitting or standing for a while, simply changing position can be enough. Sit down, recline on your left side, and give yourself a few quiet minutes to focus on what you feel. Movement is easier to notice when you’re still and paying attention.
Sound and Light Stimulation
Your baby’s hearing is well developed by 38 weeks. Talking to your baby, singing, or placing headphones on your belly and playing music can prompt a reaction. Some babies respond more to sudden noises (like a door closing) than to sustained sound, so don’t be surprised if the response is a single startled movement rather than ongoing activity.
Shining a flashlight at your belly is another technique some parents try. By the third trimester, babies can perceive light through the uterine wall, and a bright light can sometimes trigger movement. This is less consistently effective than cold drinks or position changes, but it’s worth trying if other methods haven’t worked yet.
Other Physical Techniques
Gentle physical activity can nudge your baby into action. Pelvic tilts, pregnancy-safe stretches, or a short walk often shift the baby’s position enough to produce noticeable movement. Sitting on a birthing ball and gently rocking your hips, or sitting cross-legged for a few minutes, are other options that change the shape of your pelvis slightly and can encourage your baby to reposition.
A small amount of caffeine (within the recommended limit of 200 milligrams per day, roughly one regular cup of coffee) can also act as a mild stimulant if you haven’t had any that day. Combined with a snack, it gives your baby both a sugar and caffeine boost.
How to Do a Kick Count
If you’re specifically trying to track movement, the standard approach is to count 10 distinct movements within a two-hour window. Pick a time when your baby is usually active (many babies are most active in the evening). Lie on your left side, and note each kick, roll, flutter, or push. Most babies will hit 10 well before the two hours are up.
Hiccups don’t count as movements. You’re looking for intentional activity: limbs pushing, the body rolling, or a noticeable shift in position. If you consistently reach 10 within the window, your baby’s movement pattern is normal.
When Reduced Movement Needs Urgent Attention
If you’ve tried eating, drinking something cold, and lying on your left side and you still aren’t feeling your baby move, this is not something to monitor overnight and reassess in the morning. A noticeable reduction or absence of fetal movement can be a warning sign that the baby is under stress. NHS guidelines are clear on this point: if you notice reduced or absent movement, contact your midwife or maternity unit immediately. These units are staffed around the clock specifically for situations like this.
You should not be told to wait two hours and count kicks before coming in. If you feel something is off, trust that instinct. The evaluation at the hospital is straightforward, typically involving monitoring your baby’s heart rate for a period of time, and it provides reassurance quickly. Most of the time, everything is fine. But the rare cases where intervention is needed are exactly why prompt evaluation matters.