I usually have some brown discharge before AF shows. I have PCOS so my cycles use to be irregular. I took birth control for a month about 2 months ago and my last cycle was regular. This cycle has been pretty accurate with ovulation on time and I baby danced on my ovulation days. Glow says I should have started my period 3 days ago, but yes no signs of it. I've had constant urination (like I can pee and sit down for maybe 30 minutes early less and have to rush to the bathroom again), I've had back pain, my boobs aren't to sore, and a weird craving for black olives. I don't wanna get my hopes up but does this sound like I could be?