Anyone else notice this during ovulation or fertile period?

Like right after your period or right before your period when you have sex and he cums in you all of it falls out afterwards but during your fertile week or ovulation it disappears and you are like where did it all go? I’m hoping this is a good sign as I’m having issues with my OPKs, so hoping my EWCM and the cum staying in me for awhile is a good sign! 😊