Hyperemesis?

I'm nearly 6 weeks pregnant (first pregnancy) and have had severe nausea 24/7 for the last week. Yesterday I started vomiting and today it's been nonstop. I'm having difficulty keeping water and crackers down. I'll be calling my doctor in the morning if this continues thru the night. I know my mother and sister had hyperemesis thru their pregnancies and I've heard it's genetic. I feel helpless and a little beside myself. Anyone else out there have/had hyperemesis? How do you emotionally deal with it?