NAUSEA

You guys please help . I haven't had nausea since my first child and all I had to was take a capsule of ginger every morning and I felt great all day . Long story short they were out of them were I live so I ordered them and they didn't help me this time . So I asked my doctor to prescribe me something and they sent me promethazine tablets AND THEY MAKE IT WORSE . Y'all it's so bad . I haven't been sick at all until now . I'm 8 weeks along and I'm sick all day long , I went from no nausea at all until 3 days ago being nauseous all freakin day I have thrown up every single thing that I've eaten . I feel horrible . What can I do y'all ? This is my fourth pregnancy