So Im 26 I don't know if that matters but felt I should state it anyways for some reason. I just finished my period 3 days ago, Im on day 9 of my cycle, and according to this app my fertile window doesn't even start for another 2 days yet today my lower back and ovary area have not stopped cramping and hurting. I am so confused as to why any ideas???? Or has anyone else ever had this before?? Could I be ovulating this early in my cycle or could it be something else?