Could some one help me understand??

Marti • Pregnant with rainbow baby..
I got a positive clear blue digital ovulation test yesterday morning at 7am. My dh and I bd last night.. My temp also dipped yesterday.. We haven't bd much this week.. I'm afraid that we haven't caught the egg now.. Took a different ovulation test this morning and it was negative!! When my temp dips is that when the egg is released?? I'm so confused??