So I Lost My Appetite .... I Tried To Eat

So I lost my appetite .... I tried to eat lunch once but threw up immediately ...... my bellybutton "stopped beating" ..... my grandma says cupping is the solution .... This is not new to me as it happens almost every year ..... what Is the name of this "sickness" and what are the causes ... They say heavy lifting but that's just "grandma" talk