I no I'm pregnant that's 4 sure what I am concerned about is who the father of my child is with all the calculations by the sono & when I finally got a positive on my hpt I want to say I no who it is but wit it only bn a few weeks apart like 3 weeks or so I was wondering if a blood test would help me determine this alil better if their more accurate then the sono & trying 2 go by a period I nvr had to be able 2 miss