Skin pulling

I'm 20.5 and recently besides trying to find the right amount of tiny bits of food so I don't get too full ... My skin on my back/ sides feels like it's being pulled like crazy. I'm a great hydrant or, and I've been really good w lotions/ oil. Last night I felt as if my skin was going to rip off my side to cover the front. --- but the skin if you touch it feels normal/ supple. So it's more the underneath... Anyone have aaaaaany other tricks besides coco butter?