How to get rid of nausea?????PLEASE HELP ME!!?

hi all. okay, so about 3 weeks ago i was extremly sick w the flu. nausea, fever, runny nose, caughing. so the past few weeks i have felt much better. my caugh and runny nose are still around though. today i woke up feeling so nausious. (sorry if this is gross) but the flem that has been in my throat & lungs, has been dripping to my stomach. all day ive been puking. pretty much every half hr. it sucks. ive tried everthing. laying on my right side, ginger ale, pepto bismol, tums.... how can i get rid of this nausea?? someone please help!