My OPK says I'm at my peak fertility today!

Milhu • 31yrs, DH 39... We have 2 girls, and working on our rainbow 🌈 baby.. Currently pregnant and praying this is it!!!
My DH and I BD yesterday then he got called away out of town on a job! If I'm at my peak and we BD yesterday could I still get pregnant?? OMG I hope we didn't miss it!!