any thoughts?!? (chart pic included)

emily • me 38 :: DH 40 :: DS 2 :: TTC #2
I'm 2 days late for AF and my temp just took an upswing. symptoms: lots of creamy/watery CM, bloating and gassier more than usual, light twinges and cramps but not AF cramps, a few small dizzy spells throughtout the day, and strange, vivid dreams (bright colors and weird stories). But HPTs are negative. I typically have a 13 day luteal phase and unusual for me to be late. Has this happened to anyone?  Pregnant? Stressed? Stress typically affects the follicular phase and not so much the luteal phase and I don't feel stressed.  Any thoughts would be great!! Thanks!! xoxo