So weird, my ovulation is usually just how glow predicts. It said my ovulation window was over but I felt really crampy today and had some lower back pain. I used all first response non digital tests and none of them gave me a positive opk. So I went to the dollar tree today because I didn't want to spend a lot of money and this is what I got. Sometimes I feel like dollar tree opks always get this dark. Idk maybe its just me. But I'll BD anyway.