Ovulation Test


Okay ladies I am confused. I took my ovulation test this morning and I got a mixed result. I used the clear blue advanced digital ovulation test. The result was a flashing smiling face, which usually means peak fertility. But as per the instructions and the last time I took the test, the result should stay on the test for 48 hours straight once the test detects your peak fertility. My result went away after 10 minutes. Anyone have any experience with this? I’m thinking the test misread my ovulation? Maybe I’m at high fertility? It’s worth noting I just got off my period on Saturday. My last cycle was 26 days long. Help please! I don’t want to miss my window.