In the classic 1980s film, Back to the Future 2, Marty McFly and Dr. Emmet Brown used a car fitted with a time machine to travel 30 years in the future, arriving on Oct. 21, 2015.
The time it takes for a pregnancy test to become negative following a miscarriage depends upon the gestational age at the time of miscarriage. For any pregnancy, whether it ends at term, preterm, or in miscarriage, a urine pregnancy test should be negative after six weeks. If it is not, there are three concerns:or any pregnancy, whether it ends at term, preterm, or in miscarriage, a urine pregnancy test should be negative after six weeks.
Negative test results. If the test result is negative, you may not be pregnant. However, negative results are less reliable. For example, if you do a pregnancy test too early, you could be pregnant, but there may not be enough HCG in your body to give a positive test result.