My first appointment, the one where you just confirm the pregnancy and get set up for the rest of the appointments they used the wheel to determine that I was 13 weeks then. My first actual visit with the doctor I went in thinking I was 21 weeks but measured 8-12 weeks. I've been feeling what I thought was movement for weeks now but if I'm only 8 weeks then how have I been feeling these twitches and flutters for the past 4 or 5 weeks?