Vomiting

I'm 8w3d and I've been having nausea and vomiting since about 6 weeks but the last two days have gotten so much worse to the point that I can't even down down a sip of water. I'm so weak and hungry but whatever I put in just comes right back up. My question is, is there a point I should call my doctor for this if it doesn't get any better? I'm worried about getting dehydrated but I'm always afraid to call the dr for minor things cause I feel like I'm bothering him, which I know is ridiculous