"my physician has told me to take 3.0 one time per week for weight loss.  nurse did first injection yesterday in the office at 9:30 am.  by 1 pm, i started vomiting and haven&#039;t stopped.  i am scared because the medication is in my body and i don&#039;t know how long this will last.  i do not have nausea.  i just have sudden-onset vomiting."