Im pregnant but it wouldnt show up on a test that i was. doctor said it didn't show up bc i been on birth control so long. y did it not show up on test?

Confusing: It must have shown up on some test, otherwise, how did your doctor know you were pregnant? Being on birth control for an extended period of time won't prevent a pregnancy from showing up on testing; it makes me wonder if you may not want to find another doctor to get a second opinion. There can be false negative pregnancy tests due to inherent limitations of the testing, but not b/c of ocps.