Clearblue Advance OPK

Alex

I am on day 10 of tracking my ovulation with this brand of test. Day 1 was low ovulation, Days 2-6 were high ovulation, Days 7 and 8 were peak ovulation, day nine was low ovulation, and when I tested today it was at high ovulation again? Is this normal? I tested with FMU and there was nothing to indicate a faulty test. Is it possible that I could be ovulating again?