Another ovulation????

Sorry but this is my first cycle trying to track, I've been taking opks since cd8. Yesterday cd11 had my positive. But I'm not having any other ovulation signs that I can tell. My cm is basically not there, just a tiny bit and it's just water like....no stretch or other things I've read about. Also if I'm checking my cervical position right then it's high, closed and firm. Could my opks be wrong? Or if yesterday was really right would today be dpo1? Thanks to all responses!