About how far along am I actually?

Chelsea
My last period started 2/10/15. My previous cycle was 41 days. At CD36 (Tuesday), I tested with a BFN. Then on CD39 (Friday) I got my BFP! This morning I took a Clear Blue with weeks predictor (which is since ovulation) and got 1-2 weeks. Now I know most go by date of last cycle start, but since mine is so long I wondered if that made a difference.