My cycles vary between 28-30 days. My LMP start date was 3/12 which would make me 4 weeks or 3w6d (depending on cycle length. I've just taken a Clearblue week indicator test which showed 1-2 weeks.
Am I wrong in thinking it should have shown 2-3 weeks considering we dtd on the 16th and 17th? I'm certain about these dates.