Severe nausea and vomiting in first trimester

Hi

I am in my 9th week of pregnancy and having severe nausea. I throw up 4-5 times a day. My ob-gyn has prescribed a Medicine to take along with vit b6 to bring it down little but I still puke atleast twice in a day. I have tried various home remedies but nothing seems to work. Has anyone experienced the same? Can you suggest if I can take any measure to feel better. My first pre Antal appointment is due in last week of August.