Dizziness

I'm about 7w6d and for a while since I took a pregnancy test I was nauseous all the time. Now the nausea is basically gone and now I've been feeling extremely dizzy. I'm also extremely tired and sleep a lot. My SO is a little upset that all I do is sleep. But I can't help it. I'll sleep just fine all night but wake up at 3 am or so. But my question is how did you deal with the dizziness? It just scares me because when it comes on it happens more at home when my SO is at work and our daughter is at school. Anything will help. Thank you