Belly mapping is a hands-on technique you can do at home to figure out how your baby is positioned inside your uterus. Developed by Gail Tully of Spinning Babies, the method combines paying attention to kicks, feeling your belly with your hands, and sketching what you find onto a simple diagram. It works best in the third trimester, when your baby is large enough that individual body parts are distinct through your abdominal wall.
When to Start Belly Mapping
The technique becomes practical around 30 to 34 weeks, once your baby has grown big enough for you to distinguish a head from a bottom and a back from a set of limbs. Earlier than that, the baby still has plenty of room to tumble around, so any map you draw will be outdated within hours. Later in the third trimester, typically after 34 weeks, babies settle into a more consistent position and your findings become more reliable from session to session.
Step 1: Notice Where You Feel Movement
Before you touch your belly, spend a few days paying attention to your baby’s movement patterns. Sit in a comfortable, semi-reclined position, breathe slowly, and focus on where you feel different types of activity. You’re sorting sensations into two categories: strong, distinct kicks versus gentler rolling or shifting.
Strong kicks come from your baby’s legs. Toward the end of pregnancy you can sometimes see small feet poking outward. Softer, broader movements like rolling or arching usually come from the back or torso. Hiccups feel like small, rhythmic pulses, and their location tells you roughly where the baby’s chest is. Take mental notes (or jot them down) over several sessions so you start to see a consistent pattern rather than reacting to a single movement.
Step 2: Feel for Body Parts
Once you have a sense of the movement pattern, use your hands to confirm what you’re feeling. Lie on your back with your knees slightly bent, or sit reclined, and gently press around different areas of your belly. You’re looking for four landmarks.
- The head: A hard, round, smooth shape. If the baby is head-down, you’ll find this low in your pelvis, where it may be difficult to feel because it’s tucked behind your pubic bone. If the baby is breech (head up), you’ll feel it near the top of your uterus, and it will be distinctly ball-like.
- The back: A firm, broad, flat surface along one side of your belly. It doesn’t move when you press it, unlike limbs. This is the single largest landmark and the easiest to identify once you know what you’re looking for.
- The bottom: A soft, rounded curve, less defined and less firm than the head. It sits at the opposite end of the back from the head.
- The limbs: Small, knobby, mobile bumps on the side opposite the back. These are the arms and legs. They shift and poke when you press gently, and they’re the source of those sharp kicks you tracked in Step 1.
Press gently and take your time. If your baby is active, wait for a calm stretch. It can also help to empty your bladder first so there’s less pressure in the way.
Step 3: Draw the Map
Take a piece of paper and draw a large circle representing your belly as seen from the outside (imagine looking down at your belly, so your right side appears on the left side of the circle and vice versa). Mark the top as the fundus (top of your uterus) and the bottom as your pelvis. Then sketch in what you found: the head, the back, the bottom, and the limbs. You can use simple shapes or even a little stick figure curled into position.
Spinning Babies offers a free printable handout with labeled reference diagrams, which makes it easier to compare your sketch to known positions. But even without a template, any circle and a few labeled marks will do the job.
What the Positions Mean
Once your map is drawn, you can match it to standard position descriptions. The key factor is where the back of your baby’s head (the occiput) sits relative to your body.
- Left Occiput Anterior (LOA): The baby is head-down with its back along your left side, facing your spine. This is considered ideal for labor.
- Right Occiput Anterior (ROA): Head-down, back along your right side, still facing your spine. Also a favorable position.
- Occiput Posterior (OP): Head-down but facing forward, with the baby’s back against your back. Your belly may feel softer or squishier because you’re feeling limbs across the front instead of the firm back. Kicks often land in the middle of your belly or around your belly button. This “back-to-back” position can lead to longer labors and more back pain during contractions.
- Breech: Head up near your ribs, bottom or feet pointed down. You’ll feel hard, round pressure under your ribcage and kicks lower in your pelvis.
- Transverse: The baby is lying sideways. You’ll feel the head on one side and the bottom on the other, with no firm mass at either the top or bottom of your uterus.
In an anterior position, kicks tend to land under your ribs and your belly button may stick out, pushed forward by the smooth curve of the baby’s back. In a posterior position, the belly surface feels bumpier and softer because arms and legs are facing outward.
Tips for a Clearer Reading
Belly mapping gets easier with practice. The first time, many people struggle to tell the head from the bottom or can’t locate the back at all. A few things help. Try mapping at the same time of day, ideally when your baby is calm but you’ve recently felt movement so you know they haven’t shifted. A warm bath beforehand can relax your abdominal muscles and make landmarks more distinct.
If your placenta is on the front wall of your uterus (anterior placenta), it acts as a cushion between your hands and the baby, making everything harder to feel. You can still belly map, but expect it to take more sessions before you’re confident. Pressing slightly firmer is fine, though never to the point of discomfort.
Repeat the process every few days in the weeks leading up to your due date. Babies can still change position in the final weeks, so a single map is a snapshot, not a guarantee. Tracking over time helps you notice whether your baby is settling into a consistent orientation or still rotating.
How Accurate Is Belly Mapping?
Belly mapping is a self-guided version of what clinicians do during prenatal visits when they press on your abdomen to check the baby’s position (a technique called Leopold’s maneuvers). It gives you a reasonable estimate, especially for the big questions: Is the baby head-down? Which way is the back facing? But it has real limitations. It can’t tell you about cord position, exact head flexion, or subtle variations that an ultrasound would catch. If your provider has concerns about the baby’s position, ultrasound remains the definitive tool.
The real value of belly mapping is less about clinical precision and more about connection and preparation. It helps you understand what’s happening in your body, gives you language to discuss position with your care team, and for many parents, deepens the bond with the baby before birth.