This happened in my last pregnancy at about this time. I've been done with morning sickness for a few weeks....and I never actually get sick when I have morning sickness, just feel queasy all day long.
At about this far along in the pregnancy with Nathan I got sick at work....just one isolated incident....the only time I actually threw up the entire pregnancy. It happened again this morning! What is up with that? I woke up tired but feeling great. Ate a very small breakfast...sat down at the computer to work. Then all of a sudden I started to feel that morning sickness feeling and 10 seconds later had to run to the bathroom.
I'm really hoping that this is an isolated incident like last time. I just don't get it! Why would I get sick now? I manage to keep everything down all through morning sickness...why several weeks after I've had any sign of morning sickness do I all of a sudden throw up?