Well, I think I might be out. I'm at 15dpo today and I had a temp drop this morning. (Heat had also turned off, so the house was a few degrees cooler, but still...) I also had 3-4 dreams about AF last night.
I tried testing with a store brand test and saw maybe the faintest of lines, but I'm not one to put stock in a super faint line. No actual sign of AF yet.