should I see a Dr?

new mom

I'm 16 weeks today. I've been extremely lightheaded today and dizzy. Very sick at my stomach. My stomach hurts bad. I've been cramping, feels like period cramps. I ate 2 hours ago but still feel bad. I have an appointment in 2 days to see my ob. But I don't want anything to go wrong. Should I go to er and be checked or wait it out? Heartburn has started and I've been burping alot. What do y'all think?