Positive and negative OPK same urine sample? πŸ€”

I am really confused. I took a LH test this morning as FF says I have not ovulated yet but Glow says I did. I can't tell because my BBT chart is very weird at this point in both glow and ff.

I already had a surge of LH on CD 14 and the following days were negative until that positive today... is there anyone that could give me an insight with this info and my bbt chart? This is my first month tracking and I am very confused. But what has me more baffled is to get a positive OPK and a negative, and a neutral/bad one from same urine sample?

Also, on my first positive OPK on CD 14 I did have ewcm and watery before/after now is just sticky/dry.

Does anyone has any ideas about this?

Thank you in advance ladies! 😊 best wishes to all 😊

P.s i took the other test because the previous one look invalid.