Confused

So I’m currently on cd15 with an average of 29 day cycles sometimes slightly longer sometimes slightly shorter it differs monthly. We dtd on 1/1 and starting yesterday (1/3) I began spotting light pink, I had a tiny bit of red and today it’s a tiny bit of brown. I had watery CM on 12/31 and a tiny bit of EWCM on 1/1 but as of yesterday it is more creamy. Does that mean I’ve already ovulated and the spotting is because of ovulation? I’ve only had spotting one other time during ovulation and it was only brown, lasted 3 days and ovulation came after. I’m just wanting to know if I have a chance with the BD on 1/1?