EarLy PregnancY TesT

PregNanCy TesT,,.

A pregnancy test attempts to determine whether or not a woman is pregnant. Records of attempts at pregnancy testing have been found as far back as the ancient Greek and ancient Egyptian cultures. Modern pregnancy tests look for chemical markers associated with pregnancy. These markers are found in urine and blood, and pregnancy tests require sampling one of these substances. The first of these markers to be discovered, human chorionic gonadotropin (hCG), was discovered in 1930 to be produced by the trophoblast cells of the fertilised ovum (blastocyst). While hCG is a reliable marker of pregnancy, it cannot be detected until after implantation:[1] this results in false negatives if the test is performed during the very early stages of pregnancy. Obstetric ultrasonography may also be used to detect pregnancy. Obstetric ultrasonography was first practiced in the 1960s; the first home test kit for hCG was released in the mid-1970s.

Can a woman be pregnant and still have a period?

Pregnant women can have some light irregular bleeding during pregnancy, but it should not be like a “normal” period. Some women can confuse this for their period because often it can come right around the time she was expecting her normal period. The irregular bleeding or spotting that can occur during pregnancy is often a dark brown color or a light pinkish. It should not be enough bleeding to fill pads or tampons over a few days. If you are bleeding enough to fill pads and tampons, then this would be a good indication that you are not pregnant.

Pregnancy SympToms

Delay/Difference in Menstruation:
A delayed or missed menstruation is the most common pregnancy symptom leading a woman to test for pregnancy. When you become pregnant, your next period should be missed. Many women can bleed while they are pregnant, but typically the bleeding will be shorter or lighter than a normal period.