Skeptical...

This has been a very weird TWW. Was expecting AF yesterday, and for the past four or five days, I've been dizzy, nauseated but hungry, on and off cramping and horrific nipple/breast pain. I'm terrified to get my hopes up & just be let down, AGAIN, but obviously my mind is wandering towards the "what if." Monday I slept 80% of the day, and yesterday I forced myself to stay awake but was incredibly tired. This isn't normal PMS for me. But my body has done strange things before, so I'm trying to be realistic. 
My plan is to test Thursday if AF is still MIA. Shockingly, I have no tests on hand, so a trip to the store is in order.