Should I test?

I'm confused on if I should test or not. I'm new to Glow but was an another app before that. Glow said AF was due on 2/13 the other app said 2/15. When I didn't get AF on 2/13, glow just switched AF to the following week and is saying not to test too early. My other app is stating that I'm 2 days late and I should test. AF is usually regular within a day or two. Has this happened to anyone else? Should I test?