I did not get morning sickness at all through my pregnancy. In the early days I only experienced nausea when really hungry, tiredness and sore boobs. Try not to stress too much about lack of symptoms-it doesn't always mean something's wrong. I know I spent a lot of time worrying as I had miscarried previously and I really stressed myself out.
My pregnancy has just resulted in the birth of a beautiful baby boy just 2 weeks ago!
Best of luck. Here's wishing you a happy, healthy and uneventful pregnancy. xx