12 Weeks Pregnant Symptoms

At 12 weeks pregnant, a woman has just reached the end of her first trimester. At this point, her obstetrician can feel the top of her uterus very low in her pelvic cavity. Many expectant parents wait until this time to tell family and friends that they are expecting because the risk of miscarriage drops significantly after the first trimester. Women may experience some different symptoms during week 12 of their pregnancy. Remember that not all women will experience the same signs and symptoms at the same time. Also a woman's symptoms may also differ from those of her past pregnancies. There are some common symptoms at 12 weeks pregnant that all expectant mothers should become aware of.

Nausea and Vomiting

An expectant mother may experience nausea and vomiting, also known as morning sickness at week 12 of her pregnancy. This is caused by the hormonal changes of pregnancy. Even though it is called morning sickness it can occur at any time throughout the day. Food aversions, food cravings, and a strong sensitivity to odors may also occur during this time. The good news is that most women will begin to experience a decrease in morning sickness as they enter the second trimester. However, some women will suffer with morning sickness throughout the entire course of their pregnancy. If an expectant mother's vomiting becomes severe, she may become dehydrated, which may be dangerous for her and her baby. She should contact her healthcare provider if severe vomiting occurs.


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An expectant mother may begin to feel heartburn (also called acid indigestion), a burning sensation that often extends from the bottom of her breastbone to her lower throat, reports Baby Center. This occurs as the growing uterus places upward pressure on her stomach, while the hormone progesterone relaxes the esophageal sphincter allowing gastric acid to enter the esophagus. This symptom can begin around 12 weeks and last throughout the entire course of her pregnancy. Having a diet of bland foods, eating smaller meals more frequently, and remaining in an upright position after eating may help alleviate heartburn. If heartburn becomes severe, expectant mothers should ask their physicians if they can take an over the counter antacid such as Tums, which are considered safe during pregnancy.

Increased Urination

An expectant mother may feel the need to void more frequently during week 12 of her pregnancy. This occurs as her growing uterus places additional pressure on her bladder giving her the urge to void. The same pressure may cause her to leak urine when sneezing, coughing or laughing, states Mayo Clinic. Expectant mothers should always use the restroom when they have the urge to urinate. Holding her urine may lead to a urinary tract infection, which may require treatment with an antibiotic. If frequent trips to the restroom keep an expectant mother awake at night, then she should consider limiting fluids in the evening.