Sickness

I can't kick this debilitating nausea... it last all day everyday I have tried everything under the sun but I can't kick it. My doctor has prescribed me medication and it doesn't work. Yesterday ended up on the floor 3 times in the fetal position crying because my stomach hurts so bad. I just don't know what to do I can't work I'm barely sleeping there was almost no chance that I can meet you someone please help me????