Morning sickness help?

So i was 154ish lbs when i became pregnant. Im now 149 lbs due to morning sickness. All of the weight was lost in a span of about 2 and a half weeks. Ive already been on iv fluids once before and my doctor has me on anti nausea pills which help some but i still cant eat more than maybe two yogurts a day. Taking prenantals is also making me vomit. My water consumption is fine again and im not dehydrated but my doctor is concerned about my weightloss as am i. I have a physical on the 24th and theyre worried i will have lost even more weight by then. Is there anything you can suggest for me to do? I dont want to end up in the hospital again over this. Im 9 weeks 3 days by the way.