It's pretty wrong.
Firstly - that chronological order they say is correct? Completely wrong.
"Blood clot " - no, a blood clot is a clump of blood, whereas the embryo is far more complex than that.
"Suspended" - in all honesty, it's not suspended. Connecting stalk's function isn't to hold the baby in mid air, its just the name given to the part of the placenta which becomes the umbilical cord.
http://en.wikipedia.org/wiki/Connecting_stalk. It's function to become the umbilical cord.
"Leech" - I don't see the resemblance LOL. Internal structure of a leech looks nothing like the neural tube of an embryo... at 22 days as well, it changes really quickly after that!
Basically, I feel really sad when I see videos like this. It would be better to accept that the lack of technology back in those days meant that there was less scientific knowledge known, rather than try to misconstrue vague phrases said in the Quran to what we know now.