Almost 6 weeks vs. 6 weeks 4 days

I'm very interested to see how fast it grows from week to week, if I get lucky enough to see the little guy/girl that often.  For now, I'm trying to squeeze in as many ultrasound appointments as I can in December since I already went way past my deductible back in September because of all my doctor and hospital visits with my other two pregnancies in the past 8 months.

Here are the ultrasound pictures again from a little under 6 weeks (Friday, Dec. 13) and from the pictures that we got today at about 6 weeks 4 days (Friday, Dec. 20).