I've been exclusively BFing for 4.5 months. I've had 2 AFs and expected another AF on Monday (so am 4 days late). I did one PG test and it said mildly positive and 3 since were negative. I have stepped up the expressing in the past 3 weeks as DD has started going to a child minder 3 mornings a week. Is it possible that my cycles have stopped again?