I am 11 weeks pregnant and until today have just had nausea but not actually vomited. Is it unusual that I have vomited in my 11th week? Could it be something other than morning sickness? I don't have a high temperature. I thought it could be food poisoning but I have only vomited once today and I would expect that would be more. Can anyone give me advice? I can keep down fluids so I'm not sure if I should call my doctor.