Confused need advice

Ophelia • 26 and married to my high school sweetheart 02/14/2011💕 2 boys and 1 angel 👼 06/13/2019 and a daughter

So I’m supposed to be out of my fertile window but glow sends me this today. I’m confused because my OPK line this am was barely there. And on my Glow home screen it says 3% chance today. I’m confused 😣