Nausea terrible at 12 weeks

Stacey
I am 12 weeks and 4 days right now. Since Thursday, my nausea has been worse than any other time in my pregnancy. I can not keep any food down and am constantly tired. My doctor told me to take b6 and unisom 3x daily, and it doesn't really help too much. Any one else feeling this way? Any ideas to help feel better?