Cravings Keep Changing

I'm curious to know if anyone has cravings that flip from salty to sweet and back again. It's the weirdest thing. One minute I want potatoes and next I want yellow cake with chocolate frosting. Tomorrow I will want chips then want pancakes or cupcakes. I never buy candy but I have been eating M&MS and Skittles. It's like all the food that I was eating before is just throw out the window. Does this mean anything or is it just my hormones acting funny? I'm 13 weeks and 2 days.