How accurate are clearblue ovulation tests?

This is my first cycle after loss. I had a D&C on the 3rd April and then had my first period start the 13th to the 18th May. I haven't been regular ovulation testing because I'm trying my best not to obsess over it but ovulation tested today and it's positive but I'm just wondering how accurate clearblue ovulation tests are? Just seems a bit weird to ovulate on day 23. Is it normal to ovulate later on your first cycle after having a MMC? Should I use a different brand of ovulation tests again today to double check?