Holy nausea!

I'm 7 weeks+ and the nausea has hit me. For about 3 days now it's been hard to eat and my tummy just doesn't feel right. And when I do eat it makes it that much worse. Today while trying to cook breakfast I got dizzy, shaky, and extremely sick to my stomach. My hubby finished cooking and I ate a little but it's only made me feel worse. Help?! What to do to?! I'm trying to drink lots of water to stay hydrated and I'm doing my best to eat but it's hard. And anything I eat also sends me straight to the toilet.. I have terrible diarrhea. Any tips on what to do? I really don't wanna end up at the hospital dehydrated or have to take medicine just to be able to eat.