9DPO and still have "high" reading on OPK

I'm using the clearblue opk which has a low, high, or peak reading. Leading up to ovulation I had lows, then highs, then my peak reading. The peak readings were then followed by 2 days of low readings and now 7days of consistent high readings. I've had a chemical pregnancy and a miscarriage in the past few months so I've been tracking my cycles and testing everyday to see when I get back on track to know exactly when everything should happen... my question is, has anyone had something similar happen and they end up w a BFP? Or if no BFP was there a reason you kept getting high readings after ovulation? Thank you in advance.