This was week 5, right after we found out. That's pretty much fat/bloat in that picture.
Last week, 16 weeks - for the record, I could finally say that I saw more baby bump than belly fat at 15 weeks.

This was tonight, I was kinda laughing. 17 weeks



Baby's skeleton is hardening, changing from rubbery cartilage to bone, and fat is finally accumulating around it. The umbilical cord is getting thicker and stronger, and those little fingers and toes are now topped by one-of-a-kind prints.
Watch what you say... tiny bones forming in baby's ears mean the little one can now pick up your voice. Eyebrows, lashes and hair are starting to fill in, and taste buds are forming. And, if you're interested, an ultrasound might be able to determine gender.

Continuing the march towards normal proportions, baby's legs now outmeasure the arms. And, finally, all four limbs have functional joints. Your fetus is squirming and wiggling like crazy down in the womb, though you probably still can't feel the movements.