How Does Your Baby Grow?

This is our first ultrasound.  I was about 9-ish weeks then.  (Sorry it's so blurry).  This was when I was a nervous wreck.  So I was excited to see something that slightly resembled a human.  Can you see it?  It's head and little body?  Dr. Black said that he could see a rib cage and pelvis and bones.  Do you think he really can?

And here IT is four weeks later.  It's facing down.  Dr. Black said it was praying.  I bet it's praying it's little heart out that it's parents AREN'T......well,  I could put a lot of things here.  And it's praying that it's parents ARE......a lot of things.  I couldn't believe how much it had grown since the last ultrasound. To me, it doesn't look like it has anymore room to grow.  But I'm sure it will, as it is only about an ounce here.  It's kind of weird to just call it an IT, but hopefully in 2 weeks (I'll be 17+ weeks)  we'll be able to see what IT is.  Is 17 weeks too early?  I know there are some people that think I shouldn't find out what it is, but I'm just too curious.  I think I need to find out on this first one.  But I definitely want to have a surprise baby sometime.