Ovulation pain.

Hey I have read some articles that said some women experience pain when they ovulate. I am sorta actively trying for a baby but I don't test ovulation or anything. My others kids just kind of happened and I leave it to nature and God, but every month about a week after my period my pelvic gets real tender and it hurts a little bit at that time to have sex. Its like a tender cramping sensation. Anyone experience ovulation pains? Anyone know the feeling I'm speaking of?