Pregnancy Signs of Pregnancy Pregnancy Symptoms 14 Very Early Signs of Pregnancy Think you might be pregnant? Check out these early symptoms of pregnancy that can show up as soon as one week before your missed period. By Lauren Gelman Updated on April 25, 2023 Medically reviewed by Lulu Zhao, M.D. Share Tweet Pin Email If you've been trying to conceive, you might be on the lookout for early signs of pregnancy, some of which can sometimes show up as soon as one week before your missed period. Some of those symptoms include sore breasts, cramping, and implantation bleeding. If you're noticing those, it may be time to head to the drugstore to pick up a pregnancy test or schedule an appointment with your OB-GYN. Ahead, learn more about the early signs of pregnancy and what they might mean. 01 of 15 Sore Breasts Sore breasts are common in early pregnancy due to fluctuations in hormones. Your breasts may be extra tender as early as one or two weeks after conception. "You're making so much estrogen and progesterone in early pregnancy that the glands in the breasts start growing," explains Jasbir Singh, M.D., an OB-GYN at Baylor Medical Center at Waxahachie in Texas. This hormone surge causes breasts to retain more fluids and feel heavy, sore, or more sensitive than normal PMS tenderness. Breast Pain During Pregnancy: Symptoms and Solutions 02 of 15 Cramping and Backaches Many people mistake these early signs of pregnancy for PMS symptoms, but they're actually caused by hormonal changes and the growth of the uterus. About 30% of pregnant people experience cramping after conception, which is triggered by implantation—when the fertilized egg attaches to the uterine wall. Your uterus may also be stretching a little now (hence the cramps) to prep for its massive expansion over the next nine months. How to Tell the Difference Between Implantation Cramps and PMS Cramps 03 of 15 Implantation Bleeding When a fertilized egg implants into the plush lining of the uterus about six to 12 days after conception, light vaginal spotting may occur. You might mistake this "implantation bleeding" for the start of your period, but it's generally lighter than menstruation and brown or pink (instead of red) in color. While this super early sign of pregnancy is harmless, you should always let your doctor know if you think you're expecting, so they can rule out other causes of vaginal bleeding. "In the first trimester, bleeding should be evaluated for three things in particular: miscarriage, an ectopic pregnancy, or certain types of infections," Dr. Singh says. "Implantation bleeding is sort of a diagnosis of exclusion." Is It Implantation Bleeding or Your Period? 04 of 15 Fatigue During the first few weeks, your body is working 24/7 to support the pregnancy, and fatigue is a normal response. The extra progesterone produced after conception causes your basal body temperature to rise, which in turn contributes to a lack of energy, explains Karen Perkins, M.D., an OB-GYN with A Woman's Choice at Mercy Medical Center in Baltimore. Your heart also pumps faster, as it has to deliver extra oxygen to the uterus; this, too, can make you feel tuckered out. So what should you do? "Take prenatal vitamins early on, eat a healthful diet, drink plenty of fluids to keep your blood pressure high enough, and rest when you can," Dr. Singh says. Is It PMS or Early Pregnancy? 05 of 15 Darkening Areolas Are your nipples and areolas looking darker these days? Pregnancy hormones also affect the activity of melanocytes, or cells in the nipples responsible for their color. "Darker-complexioned women may not notice this until later in pregnancy—say, around 10 weeks or so," says Melissa M. Goist, M.D., Assistant Professor of Obstetrics and Gynecology at The Ohio State University Medical Center. 9 Crazy Ways Your Breasts Change During Pregnancy 06 of 15 Nausea While full-blown morning sickness—which affects up to 85% of all pregnant people—likely won't strike for a few more weeks, some may experience more subtle motion sickness as an early pregnancy symptom. "I've had patients tell me they'd suddenly get queasy from reading in the car or would feel sick during flights," says Dr. Goist. This can start as early as two weeks after conception. "Progesterone causes a lot of things to slow down," Dr. Singh adds. That includes your digestive processes, sometimes resulting in constipation or indigestion. Since your stomach doesn't empty as quickly as it normally does, it thinks there's too much going on in there and wants to purge in some way—either into the gut or out through the mouth. Nausea also is related to human chorionic gonadotropin (hCG), a hormone that can be detected in the blood or urine even before a missed period. The higher the hCG level, the sicker you may feel. 15 Tips for Dealing With Morning Sickness 07 of 15 Bloating Can't zip up those skinny jeans? Ramped-up levels of progesterone slow down your digestive tract and may make your tummy feel puffier than usual. (This also happens during PMS, notes Dr. Goist, but bloating typically stops when your period arrives when progesterone levels plummet.) If the bloating doesn't go away—and your period never comes—start watching for that stick to turn pink. What to Know About Implantation Symptoms 08 of 15 Frequent Urination You might think frequent urination comes later when the growing fetus presses down on your bladder, but an increase in bathroom breaks sometimes starts early in pregnancy. Not only can the swelling uterus put pressure on your bladder, but the extra blood flow to the kidneys (which begins right away) also causes them to produce more urine. There's not much to do about this early sign of pregnancy, unless the frequent urination is accompanied by burning, urgency, or other signs of infection. (If so, notify your doctor.) Do not cut back on your fluid intake. 11 Pregnancy Symptoms You Shouldn’t Ignore 09 of 15 Food Cravings At this point, you're more likely jonesing for a jumbo bagel than pickles or Rocky Road. "Your overtired body may demand extra carbs now because they're easily metabolized, which helps keep energy levels up," says Dr. Goist. What's Safe to Eat When You're Pregnant—And What's Not 10 of 15 Headaches Increased blood volume may trigger frequent but mild tension headaches as an early sign of pregnancy. These headaches can also happen if you aren't drinking enough fluids or if you're anemic, so be sure to get your blood work done to rule out the latter. The good news: Migraines become less frequent as pregnancy progresses. "Fluctuating hormones tend to make headaches worse, and estrogen levels are more stable during pregnancy," explains Richard Gersh, M.D., an assistant professor of OB-GYN at Drexel University College of Medicine in Philadelphia. When to Worry About a Pregnancy Headache 11 of 15 Constipation Is constipation a sign of early pregnancy? You bet! The same hormones responsible for bloating are also behind your potty problems. Because your digestive tract is slowing down now, says Dr. Goist, food may not pass through as quickly. This early pregnancy symptom will likely ramp up even more as your pregnancy progresses. How to Manage Constipation in Pregnancy 12 of 15 Mood Swings Find yourself weeping over a commercial or raging because the Verizon guy can't come until Tuesday? "As levels of hCG hormones increase, you're feeling massive amounts of fatigue, which makes you more prone to moodiness," says Dr. Goist. And don't forget that stellar combo of headaches, bloating, constipation, and breast pain—need we say more? Am I Nuts? Understanding Your Pregnancy Emotions and Mood Swings 13 of 15 Basal Body Temperature Plateau Measuring basal body temperature (BBT)—your temperature first thing in the morning—can indicate that you've ovulated. The temperature rises about half a degree when an egg is released, and it remains elevated until you get your period. So if you're charting your BBT and notice it hasn't decreased in more than two weeks, it may mean you've got a baby on the way. FYI: You'll need a special digital basal thermometer to do this; it's more precise than normal fever-measuring thermometers. Basal Body Temperature and Ovulation: How to Track Your BBT 14 of 15 Nose Nuisances Bloody noses, congestion, and postnasal drip are common in pregnancy, and they're all related to the same two causes, says Nathaniel DeNicola, M.D., an OB-GYN at the University of Pennsylvania Health System in Philadelphia. Increasing blood volume puts more pressure on delicate vessels like the ones in your nose, but hormones are to blame too, Dr. DeNicola says. Estrogen, in particular, can make blood vessels dilate, which contributes to swelling of the mucous membranes in your nose. Luckily, much of the discomfort can be relieved by using a simple saline spray, and it should resolve soon after delivery. 10 Strange Pregnancy Symptoms 15 of 15 Common Early Pregnancy Symptoms What are the five most common early signs of pregnancy? Check out the video, and watch Dr. Alexandra Sowa explain. Was this page helpful? Thanks for your feedback! Tell us why! Other Submit