I feel my tummy is about to be ripped apart 🙄

First pregnancy, and it’s a twin pregnancy. I am 27 weeks pregnant and literally feel like my tummy is about to be ripped apart, it feels super hard and I could barely breathe. What can ease this pain and fullness??? I don’t feel like I can eat comfortably anymore. It is toooo stretched. I am not skinny.. I have lots of fat. 230 pounds.