Hi, I'm 5 days late for AF. Some brown spotting today and mild cramps. There's no way I'm pregnant as I'm around 14-18dpo (didn't actually get a positive opk, wasn't testing everyday so thos is rough) but I has a positive opk today, attached. This was with FMU. Does that mean I'm going to ovulate shortly ? Could I potentially have missed ovulation last cycle ? I'm so confused