I have taken 5 at home pregnancy testsband they all say negative, but my period is 11 days late. how likely is it that the tests are correct?

Late periods: Hi. After your period is a week late, the urine home pregnancy tests are very accurate. If, in the 7+ day late time frame they're negative, you probably are not pregnant. Keep practicing (that is, if you want pregnancy; USE BIRTH CONTROL if you don't). Good luck!

Pregnancy: test are very sensitive. the likely hood of pregnancy with 5 negative test done after more than a week of missed period is very very low. Other causes of secondary amenorrhea will be more likely