BBT drop at 6DPO

Hey ladies! So last night I didn't get good sleep. Only slept for a solid four-five hours tops. I keep track of my bbt daily, and I did wake up 2-3 hours earlier than what I usually do. My temp dropped -.83. I was hoping for an implantation drop, but with last nights sleep this probably isn't it. But SURELY that little difference doesn't cause that big of a temp drop would it??? *Please nice comments, I need the help TTC*