Positive ovulation test for 3 days

So I’ve been following the flow app and just as it stated my most fertile day was Saturday. However on Friday afternoon I did a test and it came back 2 lines, then again at the same time on Saturday, Sunday and Monday, however for the past 11 days prior to this all my tests were negative. Me and my partner have been doing the BD everyday since last Tuesday. Could there be any reason my ovulation rests keep saying positive? I thought they would go back to neg now my ovulation week and highest day are over.

My period is die in nearly 13 days so I suppose I’ll just have to hope for the best 🤦🏼‍♀️