Help!!!! My period is due in two days but I'm always irregular. I started experiencing some cramping this morning and my period came on extremely light!! I'm not soaking pads or anything like I usually do on the first day of AF showing up! Last month it came on and last two days and was super light, which it usually lasts at least 5 days. I took this test 6 hrs ago and didn't see anything, checked again just now and there is a really light line. Could this just be because it sat for too long?