Twin: One of two children produced in the same pregnancy. Twins can develop from one ovum (egg) or from two ova (eggs). Twins who develop from a single ovum are called monozygotic or identical twins. They have identical genomes. Twins who develop from two ova that are fertilized at the same time are called dizygotic or fraternal twins. They are nonidentical and have different genomes.
Unfortunately, many women have a small amount of this hormone continuously and if the level gets high enough just before a period, you could get a false pregnancy test result. The best time to use a urine test for pregnancy is three to five days after your missed period.
3. Medication: There are a few drugs which have the pregnancy hormone in that may give a false positive result. When I took a urine pregnancy test, I was 3 weeks pregnant. So, I would say as early as day 26 of a regular 28 day menstrual cycle.o,if you think you're pregnant, it might seem like a really long wait, but doctors recommend you don't take a test until your period is a day overdue. However, the First Response Pregnancy Test says that it can detect pregnancy hormones in 52% of women three days before their period is due.