Glow says to test

So I'm supposed to get my period tomorro. But glow says I should test today? Making me ancy! I cramped hard last week for like a day. Now I feel a little mild cramping. I don't want to test to get let down. But since glow told me to now I kinda feel like I have too lol. Month 5 of ttc I hope I don't get AF!!! It's been long enough. At least for me. This month we kind of just did whatever other than trying hard with preseed and what not. Now I just take prenatal pills. I don't track myself which might be the problem but I don't want to obsess about it. Cause that's even more