What Can Cause Cramps, Dizziness And Loss Of Appetite?

Hello. For the past few weeks I've had lower abd cramping, specifically on the left lower side, loss of appetite, dizzy spells, & nausea. I got my period on the 7th of this month & it was lighter than normal, but I still got it. I took a pregnancy test last wk and it was negative. Any ideas what could be wrong? I’ve been feeling like this everyday for almost a month now. When I do eat, I can’t eat very much because I start to feel VERY nauseas again. Thank you.