So what going on down there?

So my periods have been on point since trying Glow. According to the app I was due three days ago. Now you all know that weird feeling that you get when Flo is on her way. It's like a tight small cramping feeling? Well I've been having that the last two days. On top of not having sore breasts at all like normal. I don't know what's going on but I'm too scared of disappointment when taking a test. What should I do? Here's my chart also this month. I wiped today and I had very little ewcm also (I usually have none).