I know some of you POAS addicts out there can answer this for me. After my 5th IVF, I got a faint + on 11dpo. I'm 23dpo today and still poas daily even though my betas have been doubling perfectly (although started out relatively low). I go for an u/s next Friday. But my question is, how dark can that line get?? Have any of you poas this far down the line just to see the progression and to make sure that you were "still pregnant"? Did the test line eventually not get any darker?