For women who have a regular menstrual cycle, Missing of a period is usually the first signal of a pregnancy. During this time, the woman may experience frequent urination, fatigue, nausea and/or vomiting, and increased breast tenderness. All these symptoms can be normal in early pregnancy. After fertilization, the embryo enters the uterus and freely floats in the endometrial cavity for about 4-7 days before implantation. Most embryos implant on the average, 6 days after conception. However, there is great variance in the time of implantation and it can occur on days 16-30 of the menstrual cycle. After implantation, the embryo induces some changes in the lining of the endometrium known as decidualization and it then rapidly begins to develop the physiologic changes that establish a maternal-placental exchange.
Is cramping normal during pregnancy?
Early in pregnancy, uterine cramping can indicate normal changes of pregnancy initiated by hormonal changes and later in pregnancy, it can indicate a growing uterus. Cramping that is different from the experience in previous pregnancies (for those who have been pregnant before), worsening cramping, or cramping associated with any vaginal bleeding may be a sign of ectopic pregnancy or miscarriages. Other physical effects that are normal during pregnancy, and not necessarily signs of disease, including nausea, vomiting, increase in abdominal girth, changes in bowel habits, increased urinary frequency, palpitations or more rapid heartbeat, upheaving of the chest, heart murmurs, swelling of the ankles, and shortness of breath.
Why do pregnant women feel tired?
Tiredness in early pregnancy is normal due to many changes that occur as the pregnancy develops and there may be an increased need for sleep. Lower blood pressure level, lower blood sugar levels, hormonal and metabolic changes and the physiologic anaemia of pregnancy may all contribute to tiredness. Women should check with their healthcare provider to determine if an additional workup, prenatal vitamin, and/or supplemental iron would be beneficial.