Nauseous

Ok so this is mt third pregnancy and I am so nauseous I've never been so nauseous not even with my twins I sit up and get sick take my meds and get sick smell something and im sick I've tried the crackers and sipping on water eating small snacks and smaller meals I've tried everything possible I can't do very Many medications because im on blood thinners and my liver enzymes are elevated has anyone had success with using motion sickness bracelet or have any tips