Free Pregnancy Test Calculator: Know when to take a pregnancy test?
Maureen Stephens, RN writes:

Think you might be pregnant? Use our free pregnancy test calculator to know when you should take a pregnancy test
If you have been trying to get pregnant, or are just wondering if you are, you probably have considered getting a pregnancy test. Receive 20 Free Pregnancy Tests Pregnancy tests are the quickest way to know if you have a new addition to the family coming along soon.
The problem that many new moms face is that they take their pregnancy test too early, or they take it at a time that causes the pregnancy test to be less accurate. Considering how much a pregnancy test costs, taking your test at the right time will be a good way to save money. Of course, it doesn't hurt that it also might save you from a false negative or positive.
Getting the right time to take your pregnancy test is easy. All you need to do is use a pregnancy test calculator. Need tips on how to find out the best day for your test? Try some of these:
Testing Tip #1: Early Result Tests - You might not need to use a calculator to find the right day for your test if you use an early pregnancy test. These are tests specifically designed to be more sensitive to pregnancy hormones, and some can even be taken 5 days before your next period date. They cost a little more, but they are extremely accurate.
Testing Tip #2: Know Your Symptoms -If you might be in the earlier stages of pregnancy, then you probably might not be experiencing symptoms yet. However, if you do notice your breasts feeling tender or any other similar sign of pregnancy, go with your gut and get a pregnancy test. If you are experiencing symptoms already, the test will probably be positive. The hormones that cause pregnancy symptoms can be picked up by pregnancy tests.
Testing Tip #3: Get a 2nd Opinion -It's always a good idea to double check with a second pregnancy test. The pregnancy tests on the market that aren't as accurate might not get a good reading until half a week after the moment of implantation. These slow-acting tests usually are urine tests that are on the cheaper end of the spectrum.
Testing Tip #4: Pregnancy Test Calculator -You will need to provide some numbers and dates when using a pregnancy test calculator. Most of the calculations that the calculator does are based on your ovulation cycle. You will need to know your cycle in order to use a pregnancy test, as well as how long your luteal phase happens to be. An average woman's cycle is around 28 days long, in total, the luteal phase is typically half of your entire pregnancy cycle.
Testing Tip #5: False Positives -Believe it or not, false positives do happen, even with early pregnancy tests. With urine tests, this actually happens because of the possibility of evaporation lines on the pregnancy strip. It can also happen if you use the pregnancy test in the wrong way.
You can get false negatives up to 17 days after the act that may have caused pregnancy, even with the most accurate early pregnancy tests. The best time to get your pregnancy test is after your typical time for your luteal phase, since symptoms of high progesterone can mimic pregnancy symptoms. If your symptoms continue, it's time to get that test.
Testing Tip #6: How Early is too Early -Most doctors also suggest to avoid testing before implantation. Implantation occurs 8 to 10 days after ovulation. Before the blastocyst is implanted, most pregnancy tests will be too inaccurate to be worth buying.
Testing Tip #7: Timing is Everything -The timing of your cycle will be what allows you to get an accurate pregnancy test – your ovulation, your luteal phase, and everything else is closely linked with the hormone that these tests measure. As you can see, charting your periods is very important if you are trying to conceive. If you haven't started already, record your monthly visitor, and remember that ovulation tests can also help to pinpoint your most fertile days if you are still trying to get pregnant.
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Late ovulation also results in a a higher risk of miscarriage, as the older egg may be defective, and the aging corpus luteum may not be able to produce enough progesterone, which is the hormone that prepares your uterus for pregnancy, and prevents you from getting your period.