OPK CBD advance- HELP!

🎷 🎶 Susan 🎶 😎
Okay guys I need yalls advice.. i have been doing the CBD advance OPK and my results have been sat-high fertility, sun- high fertility, mon morning- high fertility, mon night- peak fertility! Out of curiosity i wanted to test this morning and it was low fertility... can my LH surge just be that short? Has anyone else had this happen?