hi im 18 /f pretty.normall diet and get excersise . but latly my stomack has been constantly bloated and hard especially the bottom. i am gettin pains in both of ribs and sometimes chest. im just exhausted all the time and sometimes hurts to walk or move like i feel very weak . cant drink or i just get acid at the back of my throat / the doc says im fine but i seriously just dont feel myself feel so ill someone please help!