Oh girl, you seriously just look WAY too cute!!! And I agree with Jodie - so hard to believe you've gained 30 lbs! You DEFINITELY look all baby! Just soooo cute!!
But about the name...I like Tess with TWO "s" at the end myself

When I see Tes with one "s" - I seem to read it as "Tez" for some reason, lol
I would definitely go with the two "s's" - sorry hubby, lol!!