So I used opks, clearblue stripe and also the digital. I got my peak on the 27th and tested with the strips again yesterday and got a positive. I tested again today on the 29th and it was negative. Just wanted to see how long my LH surge lasted to get positives. If I were to AI with frozen sperm, when would be best for me to inseminate with a two day long LH surge? All my other signs pointed to definitely ovulating yesterday, which is also synced up with the calendar on this app.