I’m curious and maybe I might get answers?

Ive got a big loss in my appetite and sometimes I’ll feel like I’m starving, start to eat then feel extremely full. My bowel movements have been happening more often which is weird, I used to only go once or twice a week now I’ll go at least once or twice a day.. I’ve also got a lot of cramping in my side.. it happens now or so often but when it does it hurts to breathe.. i was wondering if maybe this all connected and what could it be.. if you have a idea of what it could be please comment! I definitely need answers.