Clear Blue High Ovulation-8days

Help! I have been taking the Clear Blue Advanced digital ovulation tests for 6 months now and everything is usually like clockwork. I have 2 high fertility days in a row then my peak fertility. This month I have tested and I had 9 high fertility days in a row and no peak days. Is something wrong? I am supposed to have AF one week from today so it is too early for a pregnancy test. I am having serious lower back pain the last couple of days. Is there any way this could be early pregnancy symptoms? I had a miscarriage back in May so I am having a really hard time with all of this. Any advice from experience would be greatly appreciated💛