If you are simply feeling nauseous, this can be due to anything including upset stomach, dehydration, stress, ulcer, heartburn, food
allergy, etc. As far as saying you have "too much candida," that is also a very general statement. There are a variety of candida infections from vaginal candida to thrush, both of which produce noticeable physical symptoms beyond nausea.
If you are looking for a natural remedy for mild nausea, try ginger or peppermint tea and see if that helps.