12 weeks, 0 days
So, reports vary depending on what website I read, but the general consensus seems to be that 12 weeks, 0 days marks the beginning of the second trimester. The logic is that I’ve gone through 12 weeks of pregnancy by this point, week one starting at 0 weeks, 1 day. Of course, since the average pregnancy is 40 weeks long, the math doesn’t seem to work out evenly anyway, but I’ll happily take the idea that I’m now out of the first trimester and Little Bear is in a safer place.
Keep your eye out for more LBC pictures as we have a second ultrasound on Monday!