I think you see things differently in your chart after you get your BFP, kind of like hindsight is 20/20. Some people say that there is an implantation dip, but you can get pregnant with out having one. Or have lots of creamy CM, but I've had that lots and have not had a BFP. My personal opinion is there might be signs, but you wouldn't know until you get a BFP since none are 100% tied to getting pregnant.
I'll be keeping my fingers crossed for you that your temps stay high for say... nine months!?