Dizzy and almost fainting

Me

So this has happened about 5 times since I’ve been pregnant. I’m almost 7 weeks and every morning when I get up to use the bathroom and brush my teeth the whole room starts spinning and my body feels like it’s weighing itself down and I break out in a sweat and feel like I’m about to pass out. Is this normal? I’m not really sure why it’s happening. Maybe because I haven’t had anything to eat or drink yet? Or could it be something more serious?