Dry CM

Fiancé and I have been actively TTC. We BD pretty regularly, the last week we've only gone two days without (Friday and Sunday) and have two times a day since I got a positive opk on Tuesday. This morning, I woke up and was only having a little watery cm, now I'm not having any. Am I out this month, or is it possible that I did conceive? I've looked it up online, and I've read both, so I'm just curious if anyone else has gotten their BFP after having dry cm after o'ing.