Help! Question about morning sickness

I'm a little over 7 weeks and for the past 2 days I have had crippling nausea only with vomiting twice, once a day. I have unbelievable chills and I can't get at a comfortable temperature. I do not have fever. I have experienced nausea since 6 weeks but it's usually controlled by sea bands and has never stopped me from eating. Since yesterday morning, I've only eaten a handful of grapes, and apple, and a few crackers. All I want to know is if this is normal. Please help me.