nausea! help! can't keep prenatals down

So this same thing happened my last pregnancy.. it lasted the whole pregnancy.. I didn't keep food or drink down well either.. any suggestions for nausea? Or small or not gummy prenatals? With my son I just had to quit taking them because they made me sick which just made me lose more nutrients than just not trying. My doctor agreed with this decision... I'd like to be able to keep taking them through this whole pregnancy! I'm open to any suggestions