HELP!!! Early Ovulation?

Is it possible that I could have ovulated on CD10&11? Very HEAVY EWCM on those two days. Have always had a very regular cycle. S.O. came inside me on CD6. Here I am CD13 and I'm having heavy, creamy CM. Was CD10&11 my fertile days? Is that possible? And could I have gotten pregnant on CD6 if I'm fairly certain my peak was CD10&11?