So, I am 7DPO today as well, and I did a BOAS yesterday that was negative. My temp dipped way down today, just above the coverline, so that could be an implantation dip. I will BOAS again tomorrow, and post the results. BTW, Dr, I see the line too!! My second BOAS (from Saturday afternoon) was in my drawer, and when I took it out to take pics, it had a line!! But, like you, I am chalking it up to an evap because it def appeared outside of the time limit by a lot!! See for yourselves, this is 24 hours after taking it.