Late period

Sara
Ok so AF was due on Friday 8/12 but has not shown up & I have no signs of her arrival. But what I am is extremely emotional when my Bae left to go hang out all I did was cry, I'm finding myself ready to cry for no reason lately! Also (sorry tmi) the day I was suppose to menstruate I started to have a clear, stringy, mucusy discharge with no odor. Idk if I should test now or wait or if I should even mention to my Bae that I'm late? Help please!!!!!