low to peak?!

Lauren
Ahh so I've been testing ovulation with clear blue digital and was getting frustrated because glow said I should be in my fertile week but I was getting low after low reading. We have no BD'ed in the last few days and not this morning I got a solid smiley, peak?! Has anyone gone from low to peak overnight? Did I miss my chance this week? We can't BD until after work in 12 hours 😕 Does peak mean you still have time today and tomorrow or is it's too late? So mad we didn't yesterday.