My period is due March 10th (I have irregular so it's hard telling when it'll actually show up) im on cycle day 28. Would it be too early to test? I "ovulated" the 23rd of feb. (The reason I put "" is because that's what glow told me, I don't know for sure if that's when I did) my boobs have been hurting for a couple days now (sometimes a sign of AF but I'm hoping not this time) thanks in advanced.