Pregnancy testing
When to take a pregnancy test
The best timing depends on your cycle and the test you use. Home tests are useful tools, but no calendar estimate can confirm or rule out pregnancy.
When testing may be most useful
Many home urine tests are designed to be used from the day a period is expected. Testing too early can produce a negative result even when pregnancy is possible because human chorionic gonadotropin (hCG) may not yet be high enough to detect. Follow the timing guidance on the test package.
If your periods are irregular or you do not know when your period is due, ask a pharmacist or clinician when to test. Ovulation and implantation timing can vary, so an ovulation-calendar estimate is not a substitute for a pregnancy test.
How to use a home test
Check the expiration date, read the instructions before starting, and use the test exactly as directed. A concentrated urine sample may help some tests, but the product instructions should take priority. Read the result only within the stated time window; changes afterward may be misleading.
If the result is negative
A negative result may mean you are not pregnant, or that you tested too soon. If your period does not arrive, repeat the test according to the package instructions or contact a healthcare professional. Seek advice if you have ongoing missed periods or symptoms that concern you.
If the result is positive
A positive home test is usually a reason to contact a healthcare professional or pregnancy service for next steps and confirmation. Ask about medicines, supplements, and prenatal care. Do not stop a prescribed medicine without discussing it with the prescriber.
Get urgent help for warning signs
Seek urgent medical care for severe or one-sided abdominal pain, shoulder pain, fainting, dizziness, or heavy bleeding when pregnancy is possible. These symptoms can have several causes and should not be assessed by an online calculator.