My stomach??

For over a week now I've been getting these sharp pains like right where my belly button is and the tummy has been making these weird bubbling noises it's not gas or anything like that. I never really had a good diet but I've been SUPER hungry lately and I honestly don't know why. I'm starting to worry. I've been eating like a PIG and I NEVER used to eat this much. I'm 19 and I am sexually active with my partner now for 8 months my calendar said today was my period date but it's late. But it could also be wrong because it could start later as in a couple days. OH and I've been feeling VERY BLOATED for no reason my belly seems to be bigger idk if I'm just dwelling on it any clues??? THANK YOU for your help.