I'm Late!!

My cycle was suppose to start Sunday(4) according to glow. I always keep track of my cycle and they are very regular I've never been late.. Today makes day 3 and still no spotting, no cramps really, no sore breast or anything. Which is always normal for me every cycle but not this time! I have been discharging a lot its white and creamy. And im soooooo hungry like I never get full my stomach is always rumbling, and i have to pee a lot! Im so nervous and excited because my bf and I miscarried in march and have been TTC since.. Should I take a hpt? Has this happened to anyone??