You should talk to your doctor, and if you cannot stand it you should go to the ER maybe they'll give you some nausea medicine , that's what I had to do because I couldn't keep anything down not even a drink of water. Or you can try ginger teas or these ginger can'dy,! Good luck!
You need to tell your doctor about this, it can cause dehydration. Sickness is normal but that severe definitely needs to be addressed