Have I really ovulated yet?

Lindsay
I need some input from experienced bbt  charters. I generally don't ovulate later than day  16..i think day 19 was my latest ovulation date ever.  In this cycle,on days 15 and 16 I had watery/ewcm.  My husband is out of town now for a few days..hoping that today's temperature drop is just a fluke and that we tinned everything right.