Dizziness and throwing up

Hi! Today has probably been the hardest day of my pregnancy so far. I woke up dizzy and spinning. I also threw up all morning and couldn't keep anything in my stomach. I called my doctor and she told me to stay hydrated and call her if I get worse. Finally, around 12:30 I ate a few crackers and drank some Powerade. I couldn't lay down all day because every time I did I got dizzy again. I wasn't worried about my baby boy, because he was super active all day long. He was kicking my ribs all day long! Anyways, I finally ate some dinner and feel much better now. I should also add, I didn't eat dinner last night (wasn't hungry). I know that was a mistake and I won't do that again! I was just wondering if anyone has felt this way up to this point in their pregnancy as well?!?