1 Sigmoid colon: The final S-shaped length of the colon, curves inward among the coils of your small intestine, then empties into the rectum.  Rectum: The final section of digestive tract measures from 1 to 1.6 inches (or 2.5 to 4 cm). Leftover waste collects there, expanding the rectum, until you go to the bathroom.
In addition to a missed period, the earliest signs and symptoms of pregnancy might include: 1  Tender, swollen breasts. 2  Nausea with or without vomiting. 3  Increased urination. 4  Fatigue. 5  Food aversions or cravings. 6  Next.
Top Pregnancy Resources. Pregnancy week by week. Our complete pregnancy guide gives you expert info and advice about your growing baby and the changes in your body, by week and by trimester. Pregnancy symptoms: Top 11 early signs of pregnancy. You might be pregnant if you have early symptoms of pregnancy, such as nausea, fatigue, light bleeding, sore breasts, bloating, and mood swings.