Ovulation Test strips

I have been testing daily since my period ended. Just to compare FW against app.

I have gotten a faint line for the last couple days. App says I’m in the FW currently.

I was out of town and didn’t test over the weekend.

Do you still get a faint line after the surge or would it be completely negative?

Wanting to know if I missed my LH surge over the weekend when I didn’t test.