Pregnancy Tests- can you get a false reading if you're on the pill?

You should wait to take the test until after you have missed your period. There shouldn't be any form of birth control that would interfere with the test. Pregnancy tests measure HCG, even the dollar store ones work, so don't worry. Every now and then you can get a false reading even when you do it perfectly, so read the instructions carefully and test again in a week if you aren't sure.