Ovia vs Glow

Yonce

I’ve been using Ovia for a year now it’s always accurate. This is my first month using glow. The only thing is I had the stomach flu and maybe that pushed AF back a week. That could be the reason I’m late ! Usually I’m cramping pretty bad before AF I’m having light pulling pains but nothing like PMS cramps. I’m having heavy creamy discharge with sore boobs. Which one should I go by ?