First time vomitting on 17 weeks

Hi mummies! I have headache first when I wake up in the morning. After waking fron the nap, my headache became throbbing painful, which make me feel extremely giddy and nausea. I have eaten my lunch and go back to my bed and rest, not long, I have that nausea feeling and run to the toilet and vomit out all my lunch. Ever since pregnant, I only felt nausea, today is the first time I vomitted. Is this normal? Should I consult doc? #1stimemom