Ovulation

Shianne • Married 2-15-14. Police Officers Wife! Daughter of the KING! Patiently waiting & PRAYING for baby #1! Trusting my Savior
I received a positive opk last night around 9 pm & I know that you ovulate 12-36 hours after the positive opk! My question is do any of you ladies know how long the egg stays present after it is released??