Too early to test?

Danni
So AF due today. Used a first response - BFN. 25th this month, I had pinkish/red blood that's stopped the following day. No AF symptoms like normal (I usually suffer horrendous lower back pain). So I guess what I'm asking is...could it still be too early to test?? I'm going out of my mind. Not sleeping and thinking about this 24/7!