Signs and symptoms of pregnancy can be disconcerting for some women. The pregnancy tests are not always reliable home and taking time can be misleading. Most women believe that once you are pregnant, do not bleed until birth, but that is not always the case. You may appear to have a period during pregnancy and have a pregnancy test negative.
Home pregnancy tests
According to a January 2004 study of the “American Journal of Obstetrics and Gynecology,” the pregnancy tests are highly inaccurate homemade, reporting a large number of false positives and false negatives. In fact, only 1 in 18 home pregnancy test was able to detect a pregnancy at the time of a menstrual period. A more reliable option is to have a doctor perform a blood test.
According to Toni Weschler, MPH, author of the bestselling book Taking Charge of Your Fertility (Taking control of your fertility), the pregnancy test should be taken at least 14 days after ovulation. While a fertilized egg implants in the uterine wall about seven to 10 days after ovulation – which means that a woman is pregnant – it’s hard to get a positive test result at first.
Some women may think they are having a period when they are actually experiencing spotting or implantation bleeding. The American Congress of Obstetricians and Gynecologists says that vaginal spotting may actually be quite common and most women who experience this still have healthy babies. According Weschler, implantation bleeding may resemble a very light period but the blood is more brown than red. The bleeding usually occurs between seven and 10 days after ovulation. Both can occur before a woman has a pregnancy test positive.
A molar pregnancy is a condition in which a mass of tissue, not an embryo implants and grows into the uterine wall. Molar pregnancies are caused by genetic mistake and should be surgically removed. Often the first symptom is vaginal bleeding. According to a 2010 study in the Singapore Medical Journal, the results of pregnancy tests false negatives are associated with molar pregnancy.
If a woman has her first positive tests for pregnancy and then has what appears to be a period with a negative result, is likely to have a miscarriage. Other warning signs include a jet of fluid from the vagina or expulsion of fetal tissue. The miscarriages are often genetic. A woman should consult your doctor or midwife immediately if you suspect a miscarriage because it may require surgery