after how long can you take a pregnancy test
The sperm can stay in the woman’s body for up to 72 hours or three to five days. So if you had unprotected sex one or two days before ovulation or after it, you are at a risk of unwanted pregnancy. The egg, after release from the ovary is passed into the fallopian tube and needs to be fertilised within 24 hours. The first time I did this, I started my period after twelve negative tests in about a week. 1  With my first baby, the one pregnancy test I took was $20, this time it was $12. Let's just say, despite the fact that cost wasn't really a factor anymore, I only took one test per day for just under a week with my next baby. Most doctors recommend that you wait until the first day of your missed period before taking a home pregnancy test. A missed period is usually one of the first signs of pregnancy. This is usually around two weeks after conception. However, some tests are more sensitive than others and can be taken earlier. Concentrations of hCG are reported in milliInternational Units (mIU) or amounts equal to 1/1000th of an IU per milliliter. A pregnancy test with a sensitivity of 20 IU/L is more sensitive than one with 50 IU/L. Most pregnancy tests include instructions that encourage you to wait at least one week between a negative test and taking another pregnancy test. This is to allow time for your body to build up enough hCG (human chorionic gonadotropin) to be detected in your urine. Let’s say your fertilized egg implanted at 8 days past ovulation (dpo). If you have a normal 28 day cycle, that will be 6 days before your period is due. Maybe by the end of the day, your hCG level is at 5 mIU. If you wait two days (4 days before your period), your hCG level should be around 10 mIU. Depending on the sensitivity of the pregnancy test you are using, you might be able to get a very light positive result at this point. It’s not likely, but it is possible. So taking a pregnancy test after say even five days of having unprotected sex might not help. However, this greatly depends on the sensitivity of your home pregnancy test kit. Some kits can detect pregnancy as early as seven days after conception or four days before your period were supposed to start. 1 - 10 of 11 answers. 1  HCG, the hormone the pregnancy tests test for, disappears from your body about 3-4 weeks after giving birth. So if you test now and get a positive, it means you're pregnant. Sort by: best answers | most recent answers. 1 - 10 of 11 answers. HCG, the hormone the pregnancy tests test for, disappears from your body about 3-4 weeks after giving birth. So if you test now and get a positive, it means you're pregnant. How Accurate Are Pregnancy Tests? Pregnancy tests are very accurate. Most home pregnancy tests work 99 out of 100 times if used after a missed period. They can be less effective if you take the pregnancy test too early, if you do not use it correctly, or if the expiration date on the pregnancy test has passed. Most women take a home pregnancy test after a missed period, which means by the time they confirm it, they are well into four or five weeks of pregnancy. However, if you had unprotected sex and missed taking an emergency pill on time, you can take a home pregnancy test sooner to know if you are pregnant.
Two Weeks