Out of 5 tests in the package, 3 displayed an error message, 1 read "Not Pregnant", and the last 1 was still in the box. I called the service center who, after asking me to repeat how I had used the test, sent me another box of five. I had read the instructions many times before, we have been trying to get pregnant for over 6 months. Besides, I'm 39yrs old. I have peed on a stick once or twice in my life. Four out of five of the replacements again displayed an error message. I took the test apart to try and understand why these tests are so hugely flawed. I saw two blue lines. I could only guess what that meant. So I went to the Dollar Store, completed their inexpensive version, and within 3 minutes, found out what Clearblue's Digital could NOT tell me within 2 months. Clearblue Digital was an expensive, disappointingly heartbreaking experience. Our family has really lost trust in Clearblue Digital products.