Pain in knees/hips/legs a pregnancy sign?

I'm going to start off by saying I may have just pushed too hard while working out, but normally the only time my knees and hips hurt is during my period and right around ovulation. I am currently 7 dpo, so there's no expectation for them to hurt right now, but they hurt worse than they've hurt in years. Since the times they usually hurt are high-hormonal times, I'm wondering if the pain can be a sign of pregnancy? What do you think? Did you experience any pain?