Nausea and vomitting 7 weeks prego

I need help!! Can’t get into the doctor until the 3rd and I have nausea and vomiting so bad all day long. Nothing helps and I can’t keep anything down. Already lost 2 pounds in 4 days. Doctor said I should try vitamin B-6 and unisom. Been taking the b-6 since this morning. All though the nausea has subsided some, I still cant eat much. My stomach is just still so upset. Anyone have any ideas that will help? I’m starving but every time I eat it just gets upset even more. Thank you for helping.