Rapid changes. A number of great publication go into detail on various stages. 22 weeks is the later end of the 2nd trimester, you probably have had an anatomy scan (sono) and know if it's a boy or girl. Now strangers are beginning to ask if your pregnant, as you suddenly "look" pregnant. In many ways it's the best time of preg. You have energy and you are not too big or bulky yet.
If normal. Nothing special, should be feeling the baby move most days may not feel movement everyday at 22 weeks or may, .