6 Weeks and 1 Day. Morning Sickness..

So this week is when my morning sickness has suddenly kicked in, I haven't actually been sick yet. I just feel sick all the time, when I'm hungry it's the worst. I get hot flushes all the time, and I'm constantly tired. 
I thought it was a little bit early to be getting symptoms like this. Is anyone else having these and are around 6 weeks?