CD 19 - WTF??

Here we are at CD 19. I've been charting my temperature (mostly out of old habit, I guess) but I find it very strange that my temperature hasn't shifted. WTF?? It's normally up in the 98's by now. I'm pretty sure I ovulated, but I don't understand what is going on. I guess my Monday morning progesterone level will tell. No symptoms to speak of yet, though it's early. I peed on a stick today and still have HCG in my urine, same as last time. Who knows what's going on this cycle...