I don't know what to do I AM FRUSTRATED TO THE BRINK AM i think i am pushed to the limit?

I DON'T KNOW WHAT TO DO ANYMORE I AM A COLLEGE FRESHMEN WHO IS FRUSTRATED BY THE RECENT FAILURS I HAVE FAILED MY FIRST CHEMISTRY EXAM WITH A 67 AND NOW I BEARLY PED WITH A 76 I HAVE STUDYED FOR 4 STRAIGHT DAYS WITH LESS THAN 4 HOURS OF SLEEP I DON'T KNOW WHAT TO DO TO GET A HIGH GRADE BECAUSE I HAVE TO HAVE A 4.0 GPA IN ORDER TO GET TO MED-SCHOOL AND TO MAKE MY PARENTS PROUD. NO MATTER HOW LONG I STUDY OR HOW HARD I KEEP NOT FAILING I BASICLY PUT MY COLLEGE SOCIAL LIFE IN THE GUTTER IN ORDER TO STUDY MORE ALL I DO EVERYDAY IS STUDY-WORKOUT-GO TO CL AND SAME CYCLE AGAIN AND AGAIN AM FRUSTRATED TIRED EXHASTED I REALLY NEED SOME ADVICE