5.5 weeks

Dear mummies, I am 5.5 weeks pregnant now. I called up for a gyne appointment, but the nurse told me is too early to see the doctor. Instead, she asks me to wait until 7 weeks. Is this true that I'm too early? I am a bit worry because I don't have any guidance for now, like how to deal with nausea, any supplement I should take, etc. Is there anything I should caution or take note of until I meet him?