Yes, I can see a line. However, these tests are renowned for false positives and so I have read are so highly sensitive there's a chance they may detect a level of hCG you may have already had in your body without being pregnant. I don't know how true this is, but these tests are meant to be sensitive to 6.5miu I think it is (although some are questioning whether the tests even have a minimum threshold), which is the most sensitive test I have heard of. I think you should try another tomorrow or the next day and if it seems darker or if you are still seeing a faint line contact your doctor for a blood test. The implant, when inserted correctly, is highly effective but there are a small handful of women who still become pregnant so it isn't impossible