I never had any morning sickness or anything. I was just mooody. I'm 16 weeks 5 days and everything is fine. So it doesn't mean anything is wrong. You're lucky.
Mine only came by the 7th week and lasted up until now and I'll be 14 weeks on Thursday. It's very hard and wish the vomiting would stop
Its normal not to have symptoms, I didnt with my first 3 kids, this one is really getting to me =), congratulations!