I use two different brands each morning dipped in the same cup one seems more sensitive than the other but all tests are with FMU

This is my second month using opk and I probably should have tried testing twice a day because in my last cycle when I ovulate on CD14 I had a good line in the morning and the afternoon was a positive line and the next morning was almost no line again so maybe my peak is short and i missed it??

I had a lot of eggwhite and stretchy CM on CD 11-14

Any help would be appreciated