OPKs on Clomid

Stephanie
I took Clomid days 5-9.  I am now on CD 10.  I started taking the Clear Blue Digital OPKs on CD 7 per the instructions.  It is saying that I'm ovulating in the next 24-48 hours.  I wasn't sure if anyone else has had it ovulating this soon or if it couple be an error while also taking Clomid?