Adhesions typically begin to form within the first few days after surgery, but they may not produce symptoms for months or even years. As scar tissue begins to restrict motion of the small intestines, passing food through the digestive system becomes progressively more difficult. The bowel may become blocked.
At the time of implantation, the placenta starts making the pregnancy hormone hCG, which then enters the blood stream. hCG can be detected in the blood about 3 to 4 days after implantation. Urine hCG can be detected about 2 to 3 days after blood hCG can first be seen. Detection of hCG depends on timing of implantation so hCG can normally be detected in the blood between 9 and 16 days after ovulation (HPT: 12-19 days after ovulation).
More sensitive tests, those that are able to detect a lower amount of hCG, can provide an accurate result as early as 7-10 days post ovulation. When deciding if you should use an HPT or have a blood pregnancy test done at the lab, here are a few items to consider: (See the chart below for average blood hCG levels as pregnancy advances). 2  If hCG levels do not rise appropriately in those very early days, it can signal a problem with the pregnancy. 3  By monitoring your exact hCG levels with regular quantitative blood test, your doctor may be able to detect a problem early on.