Symptoms can present very early after conceiving.
I'm sorry stormyf2, but you will not experience *pregnancy* symptoms directly after *ovulation*. The egg takes a few days to make it to the uterus, so it is impossible to experience pregnancy symptoms if your egg is not even implanted yet. If you experience symptoms around ovulation time, they are unrelated to pregnancy, and more likely related to ovulation.
You can't have pregnancy symptoms if you aren't pregnant yet. Simple as that.