At 22 weeks pregnant, you are about five and a half months along. More precisely, you’ve just passed the halfway point of pregnancy and are entering your sixth month. The confusion is understandable: pregnancy is tracked in weeks, but most people think in months, and the two don’t line up neatly.
Why Weeks and Months Don’t Match Up
A calendar month isn’t exactly four weeks. Most months have 30 or 31 days, which means they contain about 4.3 weeks. Over the course of a 40-week pregnancy, that difference adds up. If you simply divide 22 by 4, you get 5.5 months, which is close enough for a quick answer. But because months vary in length, different sources will place 22 weeks at either “late in the fifth month” or “early in the sixth month.”
The Mother Baby Center breaks it down this way: by the end of week 20, you’re five months pregnant. Weeks 22 through 24 then make up your sixth month. So at 22 weeks, you’re roughly two weeks into month six. Either way, you’re solidly past the halfway mark of your pregnancy and in the second trimester.
Your Baby’s Size at 22 Weeks
At this stage, a baby measures about 7.5 inches (190 millimeters) from the top of the head to the rump and weighs around 1 pound (460 grams). That’s roughly the size of a papaya. Your baby is also developing hair, fingerprints, and footprints during these weeks.
What You Might Be Feeling
The second trimester is often called the most comfortable stretch of pregnancy, but 22 weeks still brings a growing list of physical changes. Stretch marks are one of the most common new arrivals around this time, typically showing up on the belly, upper thighs, or breasts as pink, red, or purplish streaks.
Other symptoms you may notice include round ligament pains (sharp twinges on the sides of your bump as your uterus expands), backache, leg cramps, swollen hands and feet, and heartburn. Some people develop darker patches of skin on the face, sometimes called the “mask of pregnancy.” On the plus side, many people also notice thicker, shinier hair during this stretch.
Prenatal Appointments Around This Time
Most people have their anatomy scan ultrasound around week 20, so by 22 weeks you may already have those results. That scan checks the baby’s organs, limbs, and overall growth, but it doesn’t diagnose conditions on its own. If anything looked unclear, perhaps because the baby was in an awkward position, your provider may schedule a follow-up ultrasound or refer you to a maternal-fetal medicine specialist for a closer look.
At each second-trimester visit, your provider will check your blood pressure, weight, and the baby’s heartbeat. They’ll also start measuring your fundal height, the distance from your pubic bone to the top of your uterus. After 20 weeks, that measurement in centimeters typically matches your week of pregnancy within about 2 to 3 centimeters, so at 22 weeks you’d expect a reading somewhere around 19 to 25 centimeters. An iron screening is also commonly done between 24 and 28 weeks, so your provider may mention that at an upcoming visit.
Nutrition Worth Paying Attention To
Your baby’s growth is accelerating, and certain nutrients become especially important during this part of pregnancy. Iron tops the list. The daily recommendation jumps to 27 mg during pregnancy, and an estimated 10 to 16 percent of pregnant women in the U.S. develop iron deficiency, a number that climbs to about 25 percent in the third trimester. Red meat, beans, fortified cereals, and spinach are good sources, and taking iron with vitamin C helps your body absorb it.
Magnesium is another one to watch. About half of pregnant women in the U.S. fall short of their daily magnesium needs (350 to 400 mg depending on age). Adequate magnesium may help reduce the risk of preeclampsia, a blood pressure complication that typically develops after 20 weeks. Nuts, seeds, whole grains, and dark leafy greens are all rich sources.
If you eat little to no fish, your provider may suggest an omega-3 supplement. DHA, a type of omega-3 fat, accumulates rapidly in the baby’s brain and retinas, especially heading into the third trimester. Current guidelines recommend that pregnant people with low DHA intake start supplementing by 20 weeks at the latest.
Why 22 Weeks Is a Significant Milestone
Beyond the halfway-point milestone, 22 weeks carries medical significance because it’s considered the earliest edge of fetal viability. Babies born this early face extremely long odds, but survival rates have improved over time. A Swedish study tracking outcomes across three time periods found that survival among live-born infants at 22 weeks rose from about 10 percent in 2004 to 2007 to roughly 39 percent in more recent years. Among those survivors, only about one in five avoided serious medical complications. These numbers reflect the most aggressive neonatal care settings, so outcomes vary widely by hospital and region.
For the vast majority of people at 22 weeks, this is simply a reassuring sign that pregnancy is progressing well into its second half, with about 18 weeks still to go.