PBonns, I have to say I agree with Fertility friend... simply because you did not get a temp rise min .2 degrees above the average of the six temps previous.
Your temp rise on the 16th is the first one above the majority of the others.
My temps the cycle that i got preggo had some weird early dips too, but it was still an undeniable bfp

So im hoping you get the same great news!