Post ovulation LH surge?

First month off combined birth control so I’m expecting weirdness. Got positive OPK on 5/3 and lines faded rapidly after so I stopped testing and figure ovulation on 5/3 or 5/4. Now on 5/8 I have a lot of EWCM and tested near positive OPK. Should be another 9 days or so till AF. Is it possible I tried to ovulate last week but didn’t or is ewcm common after ovulation? Thank you ladies!