I was on BC for 2 years, then ran out and didn't have the money to go back at the time, so after about 4 months of no BC I didn't start my period for two weeks (didn't think anything of it because before BC I was always unregular), but I told Jamie and he wanted to test.. the first came back negative.. but we were unsure (couldn't really read the test.. turn it one way it looked negative, turned it another it looked positive) so we bought two more tests, and they both came back positive.