I hope this won't be confusing. I'll try to ask my question as clear as i possibly can! I track my cycle using a phone app. My cycle is normally 28-30 days. Last month I was 10 days late. I have just looked at my cycle calendar and noticed that my app has predicted my AF to start in 5 days, which works out as a 38 day cycle, which was how long my cycle was last month, but that was out of the ordinary. So, if I had a 30 day cycle (normal for me) am I 3 days late or is AF really not due for another 5 days because I was late last month? I assumed that my cycle would go back to normal and last month was just a glitch. I'm a bit confused!