Random Vomiting??

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So I have been very lucky throughout my pregnancy I have had some nausea and fatigue but no vomiting. Until this morning. I have a wicked sinus headache right now so maybe that's part of it. But I was laying on the couch and suddenly just needed to vomit. I wasn't even nauseous. I'm 12weeks, is this normal for morning sickness or am I getting sick? No fever.