Nausea relief?

Does anyone have a relief for nausea?
 I'm nauseous all day everyday. I can eat certain things and be ok but most things make me feel sick. I just bought ginger ale hoping it helps at least a little but so far nothing. I can't even ride (or drive) in a car without feeling sick :(. 
This is my third pregnancy, never had morning sickness or nausea with my other two. HELP! Please :(