Positive ovulation for 3rd day

Michelle 🇬🇧

Last mth I had a strong positive in the evening and it was already negative by morning. This mth I’ve had a positive in the afternoon and by evening it was exceptionally positive and has lessened since then today, but is still mostly positive for the 3rd day now! Why is this? Does anyone know or had it happen to them? Pics are in order of how I got them over the last 3 days, the last is this mornings TIA