Hard not to test especially when you think you might be!!!! I guess this will be a telltale sign whether you feel relief or dissapointed if AF arrives??
I know what you mean about whether you want just the baby or another child, its a hard call I think??? either way you will feel comfortable with your decision in the end. You get used to the idea of another if it happens, or if you plan it.... and you get used to the idea if you decide not do it.. I have friends who thought they would love another baby and a couple of years on are very glad they did'nt do it, they have their lives to do the things they want, sometimes I have that little green eyed monster emerge when I hear some of what they are doing..but at the same time would'nt change my lot for anything...well except maybe labour????
Good luck either way...for the weekend or when you test, what will be will be.