If you missed your period, then the first thing you would do is to take a pregnancy test. On the basis of the result, you can plan ahead. However, missing your period is not the only reason why should you take a pregnancy test. Here are other reasons why should you take a pregnancy test.When is it the right time for the test?Some tests are sensitive and may show pregnancy if you have hormonal fluctuations, it could be a case of false positive. However, to ensure the most accuracy, it is best to wait until at least the first day of a missed period to take any pregnancy test. For a more accurate result, take the test a week after your missed period. This is because the traces of HCG are present from 6 days after your ovulation and it takes 7 to 10 days after ovulation for the body to build up enough HCG to show up on a test. How pregnancy tests work?Pregnancy tests work by measuring levels of chronic gonadotropin (HCG), a hormone that is only present if you are pregnant. The body only releases HCG if a fertilized egg attaches to the uterus in a process known as implantation, which happens around 10 days after conception. OTC pregnancy tests typically test your urine for HCG hormone. When should you take a pregnancy test?You missed your periodA missed period is one of the first signs of pregnancy. Typically, a menstrual cycle lasts for around 28 days, though it can vary from 24 to 38 days. Other factors however can play a role in delaying period, including stress, or certain medications or medical conditions, that may change your menstrual cycle, including birth control pills. You have crampsWhile cramping is common right before your period. But if you are tracking your menstrual cycle well and you know that it is not your period that is near, then you would probably want to take a test.This can be caused be implantation that can produce a similar feeling to menstrual cramps, especially during early pregnancy.Your breasts hurtAs pregnancy continues, your body will produce more estrogen and progesterone. These hormones leads to changes in your body that also helps in supporting your baby's growth. Due to an increased blood flow, your breasts start to feel tender and appear bigger. Your nipples too may hurt and veins look darker. You feel a bit differentBy different, it could be nausea, food aversions, exhaustion and frequent urination. These symptoms may get stronger before your HCG levels even out late in the first trimester. Your birth control failedIf you missed your pills, or your condom broke, it is best to take a test. No matter how careful you are, a slight chance of pregnancy may always be there. It is because birth control can be over 99% effective if you use them correctly, however it is not always possible. Also, male condoms are only 98% effective with perfect use. However, in reality, it is only 82% effective with typical use.The more reliable method is an intrauterine device or an IUD, which is also reversible.