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.
Common symptoms and discomforts of pregnancy include: 1  Tiredness. 2  Constipation. 3  Pelvic girdle pain. 4  Back pain. 5  Braxton Hicks contractions. Occasional, irregular, and often painless contractions that occur several times per day. 6  Edema (swelling). Common complaint in advancing pregnancy. 7  Increased urinary frequency.