Positive opk

Shianne • Married 2-15-14. Police Officers Wife! Daughter of the KING! Patiently waiting & PRAYING for baby #1! Trusting my Savior
I recieved a positive opk and about two days after I had pains in my left ovary area.. Also it has now been 4 dpo & I have breast soreness.. Is this normal? Or should I be concerned?