I keep getting periodic waves of nausea which last seconds then pass. I eat well and am happy. I am on the pill and also use condoms. I have two children already. I have done a pregnancy test which is negative. I have had these symptoms before and went to the doctor. I was not pregnant then either? What else could it be?

I feel that way when I don't drink enough water, or when I haven't eaten for a while. Have you had bloodwork done lately?