So, I have glow and ovia apps for fertility and periods! So..... My ovia app says my fertile window was from last Friday to yesterday. And my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says I'm fertile from Monday 16th to Sunday 22nd. Anyway, I have been taking opks only once a day from last week until tuesday when I've taken two. One in morning and one in night. Now I can see they're getting darker. (I think!!) and I will keep taking them, but obviously my fertility days on ovia are wrong. I'm not even sure my glow one is accurate! My period is due between 01/04 and 04/04. Normally a 29 day cycle, but my last cycle for whatever reason was 32 days!! So, am I getting close?? Are we thinking by end of today or tomorrow for positive ? I've never used opks in my life until now.