it is 10 days before af and I started spotting very light. Not sure exactly when I ovulate but according to glow it was 13th. The BF and I had sex every day from 5/9-5/13. Could it be ib or too early to tell? My cycles are about 26 days and I don't know when my ovulation is exactly. Been off Nuva ring since December but my cycles are very regular. Never spotted before either. Anyone else ever experienced this? Could it be ib?