Constant nausea

I'm now 10 weeks and for the passed 3 weeks I could never keep ANYTHING down and I'm starting to get worried. I've went to my doctor and she prescribed me 2 different types of vitamins and supplements for my nausea but that hasn't worked and I'm currently on another one (I havent taken it yet due to the time I got it) is there anything I could do to make the nausea and vomiting down? I'm missing weeks of classes and feeling not motivated enough to back on my feet.