Why does Glow do that?

Question

I was suppose to start AF on the 12th I  didn't start so when I mark my period is late it just moves it up two days. Well still no sign of AF so I put its late again and now it's messing with my DPO. Yesterday it's said 14 DPO now it says 12 DPO I'm so confused ?

Answer

I plan to use opks this month if I turn out to not be pregnant. I'm just praying this is it and I'll get my BFP this week :). Good luck to you and thanks for the info :)

Answer

Have you tested? It's because you are supposed to ovulate I believe 14 days before AF so if you're  late than it just assumes you ovulated later. It happen to me and basically my supposed fertile week was off! I plan to use OPKs and temping next if I don't get my BFP because the app is just a prediction so if the input changes so does the predictions. With OKP's and temping you can more sure of what you body is doing!