I've hit the nausea

The estimated age of my child is 6 weeks, and I have officially entered the nausea stage. It has been miserable. Today I have had nausea all day long. I have yet to actually puke, but it is so hard to do my job when feeling like this. My use of ginger ale and saltine crackers have been usless in the battle. And of course I am completely exhausted. My next OB appointment is Feb. 7th and it is also the first ultrasound! We are very excited to "see" the baby.