How your baby is growing: 17-20 weeks

19 weeks today. Still worried about lack of movement - or lack of my ability to recognise it as movement.

http://www.nhs.uk/planners/pregnancycareplanner/pages/20weeks.aspx says:
The baby is now growing quickly. The body grows bigger so that the head and body are more in proportion and the baby doesn’t look so top heavy. The face begins to look much more human and the hair is beginning to grow as well as eyebrows and eyelashes. You will probably feel your baby move for the first time around now. At first you feel a fluttering or bubbling, or a very slight shifting movement, maybe a bit like indigestion. Later you can’t mistake the movements and you can even see the baby kicking about. Often you can guess which bump is a hand or a foot and so on.

http://news.bbc.co.uk/2/hi/health/4121411.stm
Week 18 - By this stage the foetus is moving around a lot - probably enough to be felt.
Week 19 - The foetus is now about 15-20cm long and weighs about 300g. Milk teeth have formed in the gums.