Hi danniellabella,
I think my morning sickness started to fade at about week 13, and then kinda came and went until week 15 or so, when I realised I hadn't felt sick for a while.
However, some women are have morning sickness all the way through, even during labour! I had a colleague who had to stop work at about five months because she was always in the toilet, poor thing. Just in case you are one of those terribly unlucky girls, you should talk to someone now about how to deal with it. Sorry to be negative. I really hope yours clears up soon.