+ OPK BUT ITS CD 23??IM NOT UNDERSTANDING- can ANYONE help clear this up 4 me?

I took opk (strips) on 6/10 it showed strong + took another one the next day still showing +.. because of timing we were unable to BD those days, but we did on 6/8 (hope it took) this was my first time taking opk test so me just experimenting around, I took another opk yesterday.. I just knew for sure it was going to be neg. since it is cd 23, should be in 2ww... IT WAS POSITIVE.. I dont know if I should be worried, scared, happy or what... y is it showing positive??.. i know I felt the ovulation pains on 6/10.. Im sure I ovulated then... I'm worried I may have a high level of LH/ which would be bad right???